WO2011035740A1 - 一种建立或修改本地ip接入承载的方法和设备 - Google Patents
一种建立或修改本地ip接入承载的方法和设备 Download PDFInfo
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- WO2011035740A1 WO2011035740A1 PCT/CN2010/077412 CN2010077412W WO2011035740A1 WO 2011035740 A1 WO2011035740 A1 WO 2011035740A1 CN 2010077412 W CN2010077412 W CN 2010077412W WO 2011035740 A1 WO2011035740 A1 WO 2011035740A1
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- WIPO (PCT)
- Prior art keywords
- local
- base station
- evolved base
- bearer
- access
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/22—Manipulation of transport tunnels
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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
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a method and device for establishing or modifying a local IP access bearer. Background technique
- the local egress bearer is between the UE (User Equipment) and the HeNB, and the HeNB and the L-SGW (Local Serving Gateway, local Between the monthly service gateways, the bearer between the L-SGW and the L-PGW (Local PDN Gateway, the local packet data network gateway) is established.
- the UE will establish a local default bearer during the process of attaching, separating, location update, and service request.
- the local egress service of the HeNB can be enjoyed. If the UE leaves the coverage of the HeNB, the local egress capability is lost, and the service can only be obtained through the core network.
- the UEs located in the coverage of the HeNB can obtain the local egress service of the HeNB.
- the local egress service will be cut off. Therefore, for a UE that frequently reciprocates on the coverage edge of the HeNB, or when the coverage signal of the HeNB is unstable, the UE needs to continuously switch between the HeNB cell and the macro cell, and the discontinuity of the local egress service may seriously affect the user's service. Use, resulting in poor user experience.
- the embodiments of the present invention provide a method and a device for establishing or modifying a local IP access bearer, which can ensure the continuity of the local egress service of the HeNB when the UE switches between the HeNB cell and the macro cell.
- a method for establishing or modifying a local IP access bearer includes:
- the evolved base station includes a source evolved base station or a target evolved base station, and the evolved base station identifier is the same as that of the local packet data network gateway;
- a device for establishing or modifying a local IP access bearer including:
- a receiving module configured to receive a handover request message sent by an evolved base station, where the handover request message carries an evolved base station identifier, where the evolved base station includes a source evolved base station or a target evolved base station, and the evolved base station identifier and the local packet data network gateway The same identifier;
- An obtaining module configured to acquire a local export capability of the evolved base station
- Establishing or modifying a module configured to establish or modify a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and a local IP access point name, where The service gateway is located in the core network or the evolved base station.
- the mobility management entity when the terminal location is switched, the mobility management entity first receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, and then obtains The local egress capability of the evolved base station establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the HeNB local export service continuity can be ensured, and the user experience quality is improved.
- FIG. 1 is a network structure diagram according to Embodiment 1 of the present invention.
- FIG. 2 is a flowchart of a method for establishing or modifying a local IP access bearer according to Embodiment 1 of the present invention
- FIG. 3 is a flowchart of a method for establishing or modifying a local IP access bearer in scenario 1 according to Embodiment 1 of the present invention
- 4 is a flowchart of a method for establishing or modifying a local IP access bearer in scenario 3 according to Embodiment 1 of the present invention
- FIG. 5 is a flowchart of a method for establishing or modifying a local IP access bearer in scenario 4 according to Embodiment 1 of the present invention
- FIG. 6 is a flowchart of another method for establishing or modifying a local IP access bearer in scenario 4 according to Embodiment 1 of the present invention.
- FIG. 7 is a schematic structural diagram of a device for establishing or modifying a local IP access bearer according to Embodiment 2 of the present invention.
- FIG. 8 is a schematic structural diagram of a device for establishing or modifying a local IP access bearer according to Embodiment 3 of the present invention. detailed description
- the evolved base station identifier is the same as the local packet data network gateway identifier, and the local packet data network gateway is selected based on the evolved base station identifier, and the evolved base station reports the evolution to the network side.
- the base station identifier is used when the evolved base station and the local packet data network gateway are respectively different network entities, and the evolved base station identifier is replaced by the local packet data network gateway identifier reported by the network side.
- the embodiment of the present invention provides a method for establishing or modifying a local IP access bearer.
- the HeNB local packet data network gateway L-PGW (Loca l PDN) is added based on the existing HeNB local egress architecture. Gaeway, the local packet data network gateway) and the S5 interface between the core service gateway node S-GW (Serving Ga teway).
- the bearer is updated, the network updates the 7-load to the core network S-based according to the APN (Aces s Point Name) and the base station identifier HeNB ID indication message of - LIPA (Loca l IP Acces s, local IP access).
- the core network data is returned to the HeNB local, ensuring the service connection of the local egress.
- the method for establishing or modifying a local IP access bearer includes:
- the mobility management entity receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, where the evolved base station includes a source evolved base station or a target evolved base station, and the evolved base station identifier and the local packet data network gateway
- the identifiers are the same, for example, the evolved base station identifier is an IP address of a local packet data network gateway, and the like;
- the mobility management entity acquires a local egress capability of the evolved base station.
- the mobility management entity may receive the handover request message sent by the source evolved base station, where the handover request message carries information about the local egress capability of the active eNodeB, and the mobility management entity may obtain the source evolved base station by using the mobility management entity. Local export capacity.
- the mobility management entity may further receive the handover request acknowledgement message sent by the target evolved base station, where the handover request acknowledgement message carries information about the local egress capability of the target evolved base station, and the mobility management entity may obtain the target evolution The local export capability of the base station;
- the mobility management entity may also obtain information about the local egress capability of the target eNodeB by querying, thereby obtaining the local egress capability of the target eNodeB.
- the mobility management entity When the information about the local egress capability of the target eNodeB is obtained by the query, the mobility management entity first sends a handover request message to the target eNodeB, where the handover request message includes a query flag indicating that the target eNodeB returns the local egress indication information.
- the target evolved base station After receiving the handover request message including the query flag information, the target evolved base station returns a handover request acknowledgement message to the mobility management entity, where the handover request acknowledgement message carries a local exit indication of the target evolved base station, and the local exit Information indicating a local egress capability of the target evolved base station;
- the mobility management entity establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the service gateway is located in a core network or an evolved base station;
- the establishing or modifying the local IP access bearer between the serving gateway and the local packet data network gateway may include:
- the mobility management entity selects the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name; and sends a modify bearer request message to the selected serving gateway, so that Transmitting, by the serving gateway, a modify bearer request message to the local packet data network gateway, and receiving a modify bearer response message returned by the local packet data network gateway; and then receiving a modify bearer response message returned by the service gateway; For the stated After the mobility management entity selects the local packet data network gateway, the service gateway relocation process needs to be performed to relocate the serving gateway to the local serving gateway of the home base station.
- the method further includes: establishing a local IP access bearer process, where the establishing the local IP access bearer may include:
- the method further includes:
- the home base station identifier is obtained by the user-defined allowed user group list, and the home base station identifier indicates a home base station identifier that can be used as a local IP outlet in the limited user group cell that the UE is allowed to access.
- the method further includes:
- An attach accept message is sent to the user terminal by the home base station, and the attach accept message indicates that the user terminal is authorized by the network to access the local IP.
- the method further includes: determining that the user terminal is authorized to use local IP access, and allowing the user in the current tracking area where the user terminal resides A limited user group cell accessed by the terminal exists;
- the determining that the user terminal is authorized to use the local IP access includes: the cell identifiers in the tracking area are the same; If the same, the tracking area includes a limited user group cell that allows the user terminal to access;
- the defined user group identifier of the one or more defined user group cells in the tracking area is in the allowed limited user group list of the user terminal, selecting a qualified user group cell with a high priority,
- the IP accesses the home base station identifier, and obtains a home base station identifier for establishing a local exit for the user terminal.
- the method for establishing or modifying a local IP access bearer provided by the embodiment of the present invention, when the terminal location is switched, the mobility management entity first receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, and then obtains The local egress capability of the evolved base station establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the UE needs to continuously switch between the HeNB cell and the macro cell, the local egress service continuity of the HeNB can be ensured, and the quality of the user experience is improved.
- the decision to trigger a redistribution through S1 may be: Decision to trigger a relocation via Sl.
- the handover request message can be a Handover Required message.
- the forward relocation request message can be: Forward Relocation Request message.
- the switch request message can be: Handover Request message.
- the handover clearing acknowledgement message can be: Handover Request Acknowledge message.
- the update bearer request message may be: Update Bearer Request message or tampering request message: Modify Bearer Request message.
- the update request response message may be: Update Bearer Request Response message or modify bearer response message: Modify Bearer Response message.
- the attach request message may be an Attach Request message.
- the establishment of the default bearer request message may be: Create Default Bearer Request message or establish session request: Create Session Request message.
- the default bearer response message may be: Create Default Bearer Response message or create a session corresponding message Create Session Response.
- the initial context setup request message can be: Initial Context Setup Request message.
- the attach accept message may be: an Attach Accept message.
- the RRC connection reconfiguration message may be: RRC Connection Reconfiguration message. For the L-SGW and L_PGW local to the HeNB, since they are set on the HeNB, the L-SGW ID and the L-PGW ID are set to have the same ID as the HeNB, that is, the HeNB ID.
- Manner 1 The UE requests a LIPA service from the core network, and the core network establishes a LIPA bearer for the UE that is allowed to perform LIPA.
- the UE that is allowed to perform the LIPA service can obtain the LIPA permission indication information sent by the core network in the attaching process.
- the core network establishes a LIPA bearer for the UE.
- the method flow of the first method includes:
- the UE initiates an attach request message to the base station.
- the attach request message carries an APN for LIPA access, indicating that the UE requests the HeNB local IP access P ⁇ from the network, as represented by LIPA AP.
- the base station obtains the MME (Mobi Management Management Entity) according to the S-TMSI (Temporary Mobile Subscriber Identity) and the selected network indication. If the MME is not available, select the feature through the MME selection function. Then, the base station forwards the attach request message to the MN in the S1-MME control signaling, and carries the base station identity eNB ID and/or the LIPA capability of the HeNB in the message, for example, using LB0 Indi ca t ion ( Loca l Breakout Indi ca Ti on, local exit indication).
- MME Management Management Entity
- S-TMSI Temporal Mobile Subscriber Identity
- the LIPA permission subscription information is saved in the subscription information of the UE.
- the MN receives the LIPA request from the UE, and performs LIPA access judgment according to the LIPA subscription information of the UE and the base station identity eNB ID and/or the LIPA capability of the HeNB. If allowed, the MME selects the L-PGW and L_SGW to the local base station according to the LIPA APN and the eNB ID. The MME sends a default bearer clearing message to the L_SGW (the default bearer clearing message may be a Crea te Defaul t Bearer Reques t message or a session request).
- the L-SGW creates an entry in its EPS (Evolved Packet System) list and sends a default bearer request message to the L-PGW.
- EPS Evolved Packet System
- the L-PGW returns a default bearer response message to the L-SGW.
- the L-SGW returns a setup bearer response message to the MN.
- Mode 2 includes:
- the UE initiates an attach request message to the base station.
- the base station obtains the MME according to the S-TMSI and the selection network indication. If the MME is not available, the MME is selected by the MME selection function. Then, the base station forwards the attach request message to the ⁇ E in the S1-MME control signaling, and simultaneously carries the base station identity eNB ID and/or the LIPA capability of the HeNB, such as LB0. Indi ca t ion said.
- Li E makes a LIPA access judgment based on the UE's LIPA subscription information and LB0.
- ⁇ E selects an S-GW to send a setup bearer request message. If the result of the LIPA access judgment of the UE is allowed, the LIPA permission indication message is carried in the message, which can be expressed by, for example, LIPA Indi ca t i on.
- Step 4) ⁇ Step 8) Same as the attach procedure in 23. 401.
- the messages sent in these steps need to carry the LIPA indication message LIPA Indi ca t ion
- the subsequent UE initiates a LIPA service request message to ⁇ .
- the UE's LIPA bearer is established.
- Scenario 2 Network architecture to maintain local export continuity after relocating to the S-GW of the core network
- the interface L_S5 between the S-GW and the L-PGW is added.
- the local L-SGW is relocated to the core network S-GW.
- the network indicates an LBO Indication and/or HeNB ID (ie, L-PGW ID) according to the local egress of the HeNB, and the LIPA AP addresses the L_PGW local to the HeNB, and establishes a bearer between the core network S-GW and the L-PGW. .
- the UE When the UE switches from the HeNB cell that allows access to a non-CSG cell in the Activate mode, when the HeNB receives the downlink LIPA packet, the L-PGW tunnels the packet to the S_GW of the core network, thereby ensuring The UE may receive packet data from the HeNB local. Under the premise that the local egress continuity cannot be guaranteed, when the UE has switched to a non-CSG cell, the downlink LIPA packet arrives at the HeNB, but when the HeNB does not know how to transmit the packet, it will tunnel the packet to the PDN GW. The packet is thus considered to be a non-LIPA service.
- Scenario 3 This embodiment mainly solves the method for ensuring the continuity of the local egress of the home base station after the UE moves from the coverage area of the home base station of the CSG cell that is allowed to access to the macro cell in the CSG scenario.
- the method includes:
- the source base station decides to initiate an S1-based handover to the target base station.
- the source base station sends a handover demand message to the source E.
- the handover requirement message may include the following parameters: a source base station to a target base station transparent transmission container, a target base station identifier, an S1 AP cause, a selected location area identifier, and the like.
- the message carries the eNB ID of the source base station, LBO Indication
- source E sends a forward relocation request message to the target MN.
- the forwarding relocation request message may include the following parameters: ⁇ E UE context, the source base station to the target base station Transfer container, target base station eNB ID.
- Execution 23.401 switches the process steps based on S1.
- the MME selects a local P ⁇ GW, that is, an L-PGW, to the source base station according to the LIPA AP and the eNB ID of the source base station.
- the local L-SGW of the source base station is relocated to the SGW of the core network.
- the bearer update request message includes the following parameters:
- the ID is the TEID for receiving the downlink bearer on the S1-U, and the TEID for the received EPS bearer allocated at the target base station.
- the SGW sends a bearer update request message to the L-PGW. After receiving the bearer update request message, L-PGW updates its context.
- the L-PGW returns an Update Bearer Response message to the SGW.
- the update bearer response message includes the following parameters: PDN GW address, TEID, MSIS ⁇ , etc.
- the SGW sends a bearer update response message to ⁇ .
- the update bearer response message includes the following parameters: PDN GW address, TEID, and the like.
- the UE switches from the source base station to the target base station, and the bearer is updated to the source base station local LIPA bearer.
- the solution is mainly to solve the problem that when the UE enters the TA where the home base station is allowed to access, the network establishes a local IP egress bearer between the core network S-GW and the local L-PGW of the home base station, thereby ensuring that the UE is in the UE.
- This embodiment is mainly described in two steps. First, in the location update process, the network judges to establish a local egress bearer for the UE. Secondly, when the UE switches from the macro cell to the cell covered by the home base station, the local egress carries the update process.
- the following steps between the source E and the target E may be omitted, and the source MME and the target MME are the same MME.
- the following steps between the source SGW and the target SGW may be omitted, and the source SGW and the target SGW are the same SGW.
- the trigger location update process can be: Trigger to start TAU procedure.
- the TAIH request message can be: TAU Request message.
- the establishment of the bearer request message may be: Create Bearer Request message or establish a session request message: Create Session Request message.
- the update bearer clearing message can be: Update Bearer Request message or modify bearer clearing message: Modify Bearer Reques t message.
- the update bearer response message can be: Upda te Bearer Response message or modify the load response message: Modi fy Bearer Respinse message.
- the setup response message may be: a Crea te Bearer Response message or a session response message: Crea te Ses s ion Response message.
- the HeNB ID which is a home base station identifier that can be used as a local egress in the CSG cell that allows the UE to access, needs to be added in the ACL of the UE, and is represented by the LIPA HeNB ID.
- the method includes:
- the UE sends a TAU request message to the base station.
- the TAU request message may include the following parameters:
- the TPA request message carries the LIPA APN.
- the base station forwards the UE's TAU request message to the target.
- the MN After receiving the TAU request message of the UE, the MN needs to perform two-step judgment. First, it is determined whether the network allows the LIPA service requested by the UE. The judgment method is the same as the judgment process in the process of establishing the local default bearer.
- LIE E determines whether the CSG ID in the ACL of the UE is the same as the CSG ID in the cell ID-Ce l l ID of the cell under the TA. If they are the same, it indicates that the TA contains a CSG cell that allows the UE to access. If ⁇ E determines that the CSG ID of more than one CSG cell in the TA is in the ACL of the UE, the CSG cell with the higher priority is selected according to the priority order. Then, based on the CSG ID and the LIPA HeNB ID in the ACL of the UE, the MN obtains the HeNB ID that can establish a local exit for the UE.
- the MME selects an L-PGW on the HeNB that can be used as a local IP egress to allow the UE to access according to the HeNB ID and the LIPA AP.
- the MME selects an S-GW to send a setup bearer request message.
- the setup bearer request message may include the following parameters: IMSI, bearer context, MME address and TEID, type, and the like.
- the S-GW sends an update bearer request message to the L-PGW selected by the MN.
- the update bearer request message may include the following parameters: S-GW address and TEID, RAT type, and the like.
- the L-PGW returns an update 7-load response message to the S-GW.
- the update 7-load response message may include the following parameters: MS ISDN, PDN GW address, TEID, and the like.
- the S-GW returns a message to establish a bearer response to the ⁇ .
- the bearer response message can be packaged The following parameters are included: S-GW address and TEID.
- the UE establishes a LIPA bearer between the core network S-GW and the home base station local L-PGW.
- the method includes:
- the source base station decides to initiate an S1-based handover to the target base station.
- the source base station sends a handover demand message to the source E.
- the handover requirement message may include the following parameters: a source base station to a target base station transparent transmission container; a target base station identifier, an S1 AP cause, a selected location area identifier, and the like.
- Source E sends a Forward Relocation Request message to the target MN.
- the forwarding relocation request message may include the following parameters: ⁇ E UE context, source base station to target base station transparent container, eNB ID.
- the target MME sends a handover request message to the target base station.
- the handover request message may include the following parameters: an EPS bearer to be established, an AMBR, an S1 AP cause, a source base station to a target base station transparent transmission container, a switch restriction list, and the like.
- the handover request message carries a query identifier of the local area exit capability indication information of the base station, such as a BO Requi red Indicating.
- the target base station sends a handover request acknowledgement message to the target MME.
- the handover request acknowledgement message may include the following parameters: an EPS bearer setup result, a target base station to a source base station transparently transmitting a container, and the like.
- the handover request acknowledgement message carries the local egress capability indication information, as indicated by LBO Indication.
- the LB0 Indi can also be carried in the message to the target MME without the query process of step 4).
- the MME selects a local P ⁇ GW, ie, L_PGW, on the target base station according to the LIPA AP and the eNB ID.
- the S-GW is relocated from the core network to the L-SGW local to the target base station.
- the bearer update request message includes the following parameters: an eNB ID, a TEID for receiving the downlink bearer on the S1-U, a TEID for receiving the EPS bearer allocated at the target base station, and the like.
- the L-SGW sends a bearer update request message to the L-PGW. After receiving the bearer update request message, L-PGW updates its context.
- L-PGW returns an update 7-load response message to L-SGW C to update the 7-load response message including Parameters: PDN GW address, TEID, MSIS ⁇ , etc.
- the L-SGW sends a bearer update response message to the LG.
- the update bearer response message includes the following parameters: P ⁇ GW address, TEID, and the like.
- the UE switches from the source base station to the target base station, and the bearer is updated to the target base station local LIPA bearer.
- the method for establishing or modifying a local IP access bearer provided by the embodiment of the present invention, when the terminal location is switched, the mobility management entity first receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, and then obtains The local egress capability of the evolved base station establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the UE needs to continuously switch between the HeNB cell and the macro cell, the local egress service continuity of the HeNB can be ensured, and the quality of the user experience is improved.
- An embodiment of the present invention provides a device for establishing or modifying a local IP access bearer. As shown in FIG.
- the receiving module 701 is configured to receive a handover request message sent by the evolved base station, where the handover request message carries an evolved base station identifier, where the evolved base station includes a source evolved base station or a target evolved base station, and the evolved base station identifier and the local packet data network gateway Same logo;
- the obtaining module 702 is configured to acquire a local egress capability of the evolved base station
- the establishing or modifying module 703 is configured to establish or modify a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the serving gateway is located in a core network or an evolved base station.
- the device for establishing or modifying a local IP access bearer provided by the embodiment of the present invention, when the terminal location is switched, the mobility management entity first receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, and then obtains The local egress capability of the evolved base station establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the UE needs to continuously switch between the HeNB cell and the macro cell, the local egress service continuity of the HeNB can be ensured, and the quality of the user experience is improved.
- An embodiment of the present invention provides a device for establishing or modifying a local IP access bearer, as shown in FIG.
- the device includes:
- the receiving module 701 is configured to receive a handover request message sent by the evolved base station, where the handover request message carries an evolved base station identifier, where the evolved base station includes a source evolved base station or a target evolved base station, and the evolved base station identifier and the local packet data network gateway Same logo;
- the obtaining module 702 is configured to acquire a local egress capability of the evolved base station
- the establishing or modifying module 703 is configured to establish or modify a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the serving gateway is located in a core network or an evolved base station.
- the obtaining module 702 includes at least one of the following units:
- the first obtaining unit 7021 is configured to acquire information about a local egress capability of the source eNodeB according to the handover request message sent by the source eNodeB received by the receiving module 701.
- the second obtaining unit 7022 is configured to receive a handover request acknowledgement message sent by the target evolved base station, and obtain a local egress capability of the target eNodeB according to the handover request acknowledgement message, where the handover request acknowledgement message carries Information about the local egress capability of the target evolved base station;
- the third obtaining unit 7023 is configured to query information about acquiring a local egress capability of the target eNodeB.
- the establishing or modifying module 703 includes:
- the selecting unit 7031 is configured to select a serving gateway and a local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and a local IP access point name;
- the sending unit 7032 is configured to send a modify bearer request message to the selected serving gateway, so that the serving gateway sends a modify bearer request message to the local packet data network gateway, and receives a modified bearer returned by the local packet data network gateway.
- the receiving unit 7033 is configured to receive the modify bearer response message returned by the serving gateway, and the modifying unit 7034 is configured to: after the receiving module 701 receives the modify bearer response message returned by the serving gateway, modify the bearer to the core network. 7-between between the serving gateway and the selected local packet data network gateway.
- the device also includes:
- the sending module 704 is configured to send, by using the home base station, an attach accept message to the user terminal, where the attach accept message indicates that the user terminal is authorized by the network to access the local IP.
- the receiving module 701 is further configured to receive an attach request message or a tracking area update sent by the user terminal.
- the message, the attachment request message or the tracking area update message carries the local IP access point name.
- the device also includes:
- the determining module 705 is configured to determine that the user terminal is authorized to use local IP access, and the current tracking area where the user terminal resides has a limited user group cell that allows the user terminal to access.
- the determining module 705 is specifically configured to determine whether the limited user group identifier in the allowed user group list of the user terminal is the same as the cell identifier in the tracking area; if the same, the tracking area includes a limited user group cell that allows the user terminal to access; if there is more than one qualified user group identifier of the defined user group cell in the tracking area in the allowed limited user group list of the user terminal, then selecting a qualified user group cell with a high priority;
- the determining module 705 obtains a home base station identifier for establishing a local exit for the user terminal according to the limited user group identifier and the local IP access home base station identifier in the user group list of the user terminal.
- the device for establishing or modifying a local IP access bearer provided by the embodiment of the present invention, when the terminal location is switched, the mobility management entity first receives the handover request message sent by the evolved base station, where the handover request message carries the evolved base station identifier, and then obtains The local egress capability of the evolved base station establishes or modifies a local IP access bearer between the serving gateway and the local packet data network gateway according to the evolved base station identifier, the local egress capability of the evolved base station, and the local IP access point name.
- the UE needs to continuously switch between the HeNB cell and the macro cell, the local egress service continuity of the HeNB can be ensured, and the quality of the user experience is improved.
- the embodiment of the present invention is applicable to an EPS system, but is not limited thereto, and may be applied to other mobile communication systems such as a medical system (Universal Mobile Phone System).
- EPS Universal Mobile Phone System
- the base station in the EPS system is an evolved base station in the medical TS system, and therefore is referred to as an evolved base station eNB.
- the NB and the eNB are collectively referred to as a base station.
- the home base station is a small base station, and the following schemes applicable to the base station are equally applicable to the home base station.
- the terminal when the serving gateway is located in the core network, the terminal does not need to perform relocation of the serving gateway in the handover process, and the data routing of the local IP access service passes through the base station and the local grouping. Direct channel mode implementation between data network gateways.
- the home base station is used as a local IP egress to establish or modify a local IP address.
- the case of access bearer is taken as an example for description.
- the L-PGW ID is the same as the HeNB ID.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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Description
一种建立或修改本地 IP接入承载的方法和设备
本申请要求于 2009年 9月 28日提交中国专利局、 申请号为 200910177266.2、 发明名称为"一种建立或修改本地 IP接入承载的方法和设备"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及与移动通信技术领域, 特别涉及一种建立或修改本地 IP接入承 载的方法和设备。 背景技术
对于具有本地出口能力的 HeNB ( 3G Home eNodeB, 第三代家庭基站)来 说,本地出口承载是通过 UE ( User Equipment,用户设备)与 HeNB之间, HeNB 与 L-SGW( Local Serving Gateway,本地月良务网关)之间, L-SGW与 L-PGW( Local PDN Gateway, 本地分组数据网网关)之间的承载建立起来的。 UE在附着、 分 离、 位置更新和业务请求等过程中将建立本地缺省承载。
当 UE位于 HeNB小区覆盖范围内, 可享有 HeNB本地出口业务, 若 UE离 开 HeNB小区覆盖, 则丧失本地出口能力, 而只能通过核心网获取业务。
只有位于 HeNB覆盖范围内的 UE, 才能获得 HeNB本地出口业务。 当正在 使用本地出口业务的 UE移动到 HeNB覆盖范围之外时,本地出口业务将被切断。 因此对于在 HeNB覆盖边缘频繁往复移动的 UE,或 HeNB覆盖区信号不稳定时, UE需要不断在 HeNB小区和宏小区切换的情况,本地出口业务的这种不连续性, 会严重影响用户对业务的使用, 从而导致用户体验差。
发明内容
本发明的实施例提供一种建立或修改本地 IP接入承载的方法和设备, 能够 当 UE在 HeNB小区和宏小区之间切换时, 保证 HeNB本地出口业务连续性。
本发明实施例采用的技术方案为:
一种建立或修改本地 IP接入承载的方法, 包括:
接收演进基站发送的切换请求消息, 所述切换请求消息中携带演进基站标
识, 所述演进基站包括源演进基站或目标演进基站, 所述演进基站标识与本地 分组数据网络网关的标识相同;
获取所述演进基站的本地出口能力;
根据所述演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在 服务网关与本地分组数据网络网关之间建立或修改本地 IP接入承载, 所述服务 网关位于核心网或者演进基站。
一种建立或修改本地 IP接入承载的设备, 包括:
接收模块, 用于接收演进基站发送的切换请求消息, 所述切换请求消息中 携带演进基站标识, 所述演进基站包括源演进基站或目标演进基站, 所述演进 基站标识与本地分组数据网络网关的标识相同;
获取模块, 用于获取所述演进基站的本地出口能力;
建立或修改模块, 用于根据所述演进基站标识、 所述演进基站的本地出口 能力及本地 IP接入点名, 在服务网关与本地分组数据网络网关之间建立或修改 本地 IP接入承载, 所述服务网关位于核心网或者演进基站。
本发明实施例建立或修改本地 IP接入承载的方法和设备, 当终端位置切换 时, 移动性管理实体先接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 之后获取演进基站的本地出口能力, 根据演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据 网络网关之间建立或修改本地 IP接入承载。 与现有技术相比, 在 UE需要不断 在 HeNB小区和宏小区切换的情况, 也能保证 HeNB本地出口业务连续性, 提 高了用户体验质量。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动的前提下, 还可以根据这些附图获得其它的附图。
图 1为本发明实施例一提供的网络结构图;
图 2为本发明实施例一提供的建立或修改本地 IP接入承载的方法流程图; 图 3为本发明实施例一提供的场景一中建立或修改本地 IP接入承载的方法 流程图;
图 4为本发明实施例一提供的场景三中建立或修改本地 IP接入承载的方法 流程图;
图 5为本发明实施例一提供的场景四中建立或修改本地 IP接入承载的方法 流程图;
图 6为本发明实施例一提供的场景四中另一种建立或修改本地 IP接入承载 的方法流程图;
图 7为本发明实施例二提供的建立或修改本地 IP接入承载的设备结构示意 图;
图 8为本发明实施例三提供的建立或修改本地 IP接入承载的设备结构示意 图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其它实施例, 都属于本发明保护的范围。
为使本发明技术方案的优点更加清楚, 下面结合附图和实施例对本发明作 详细说明。
当演进基站和本地分组数据网络网关为一个网络实体时, 演进基站标识与 本地分组数据网络网关标识相同, 本地分组数据网络网关的选择以演进基站标 识为依据, 演进基站向网络侧上报的是演进基站标识; 当演进基站与本地分组 数据网络网关分别为不同网络实体时, 演进基站向网络侧上报的演进基站标识 用本地分组数据网络网关标识所代替, 上述说明对以下实施例都适用。
实施例一
本发明实施例提供了一种建立或修改本地 IP接入承载的方法,如图 1所示, 在现有的 HeNB本地出口架构基础上, 增加 HeNB本地分组数据网络网关 L-PGW ( Loca l PDN Ga teway , 本地分组数据网网关) 与核心网服务网关节点 S-GW ( Serving Ga teway , 服务网关)之间的 S5接口。 当承载更新时, 网络根据用 - LIPA ( Loca l IP Acces s , 本地 IP接入) 的 APN ( Acces s Point Name , 接入 点名 )和基站标识 HeNB ID指示消息将 7 载更新为核心网 S-GW与 HeNB本地上 的 L-PGW之间, 从而将核心网数据迂回到 HeNB本地, 保证了本地出口的业务连
续性。 如图 2所示, 该建立或修改本地 IP接入承载的方法包括:
201、 移动性管理实体接收演进基站发送的切换请求消息, 所述切换请求消 息中携带演进基站标识, 所述演进基站包括源演进基站或目标演进基站, 所述 演进基站标识与本地分组数据网络网关的标识相同, 例如, 所述演进基站标识 是本地分组数据网络网关的 I P地址等;
202、 移动性管理实体获取所述演进基站的本地出口能力;
移动性管理实体可以通过接收所述源演进基站发送的切换请求消息, 所述 切换请求消息中携带有源演进基站的本地出口能力的信息, 移动性管理实体由 此可以获取所述源演进基站的本地出口能力。
移动性管理实体还可以通过接收所述目标演进基站发送的切换请求确认消 息, 所述切换请求确认消息中携带目标演进基站的本地出口能力的信息, 移动 性管理实体由此可以获取所述目标演进基站的本地出口能力;
移动性管理实体还可以通过查询获取所述目标演进基站的本地出口能力的 信息, 由此可以获取所述目标演进基站的本地出口能力。
当通过查询获取所述目标演进基站的本地出口能力的信息时, 移动性管理 实体先向目标演进基站发送切换请求消息, 所述切换请求消息中包含指示目标 演进基站返回本地出口指示信息的查询标志信息; 目标演进基站在接收到包含 该查询标志信息的切换请求消息后, 向移动性管理实体返回切换请求确认消息, 所述切换请求确认消息中携带目标演进基站的本地出口指示, 所述本地出口指 示表明目标演进基站的本地出口能力的信息;
203、 移动性管理实体才艮据所述演进基站标识、 所述演进基站的本地出口能 力及本地 I P接入点名, 在服务网关与本地分组数据网络网关之间建立或修改本 地 IP接入承载, 所述服务网关位于核心网或者演进基站;
其中, 所述在服务网关与本地分组数据网络网关之间建立或修改本地 IP接 入承载具体可以包括:
移动性管理实体根据所述演进基站标识、 所述演进基站的本地出口能力及 本地 IP接入点名选择服务网关和本地分组数据网络网关; 并向所选择的服务网 关发送修改承载请求消息, 以使所述服务网关向所述本地分组数据网络网关发 送修改承载请求消息并接收所述本地分组数据网络网关返回的修改承载响应消 息; 然后接收所述服务网关返回的修改承载响应消息; 最后将承载修改为所述
其中, 在所述移动性管理实体选择本地分组数据网络网关之后, 还需要执 行服务网关重定位过程, 将服务网关重定位为家庭基站的本地服务网关。
进一步, 在所述移动性管理实体接收演进基站发送的切换请求消息之前, 还包括建立本地 IP接入承载过程, 其中, 所述建立本地 IP接入承载具体可以 包括:
根据本地 IP接入点名和家庭基站标识, 选择本地分组数据网络网关和服务 器网关;
向所述服务网关发送建立或修改承载请求消息;
接收所述服务网关返回的建立或修改承载响应消息, 完成在所述服务网关 和本地分组数据网络网关之间的建立或修改承载过程。
进一步, 在所述根据本地 IP接入点名和家庭基站标识, 选择本地分组数据 网络网关和服务网关之前, 还包括:
接收用户终端发送的附着请求消息, 所述请求消息中携带所述本地 IP接入 点名; 以及
由家庭基站接收前转网络接入服务器消息, 所述前转网络接入服务器消息 中携带所述家庭基站标识; 或者,
接收用户终端发送的跟踪区更新消息, 所述跟踪区更新消息中携带所述本 地 IP接入点名; 以及
由用户终端的允许限定用户群组列表中获取所述家庭基站标识, 所述家庭 基站标识表示允许 UE接入的限定用户群组小区中可作为本地 IP 出口的家庭基 站标识。
进一步, 在所述完成在所述服务网关和本地分组数据网络网关之间的建立 或修改承载过程之后, 还包括:
通过家庭基站向用户终端发送附着接受消息, 所述附着接受消息指示所述 用户终端被网络授权本地 I P接入。
进一步, 在所述接收用户终端发送的跟踪区更新消息之后, 还包括: 判断所述用户终端被授权使用本地 IP接入, 且所述用户终端所驻留的当前 跟踪区中有允许所述用户终端接入的限定用户群组小区存在;
所述判断所述用户终端被授权使用本地 IP接入包括: 所述跟踪区下的小区标识相同;
如果相同,则所述跟踪区内包含允许所述用户终端接入的限定用户群组小 区;
如果所述跟踪区内有一个以上限定用户群组小区的限定用户群组标识在所 述用户终端的允许限定用户群组列表中,则选择优先级高的限定用户群组小区,
IP接入家庭基站标识,得到为所述用户终端建立本地出口的家庭基站标识。
本发明实施例提供的建立或修改本地 IP接入承载的方法, 当终端位置切换 时, 移动性管理实体先接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 之后获取演进基站的本地出口能力, 根据演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据 网络网关之间建立或修改本地 IP接入承载。 与现有技术相比, 在 UE需要不断 在 HeNB小区和宏小区切换的情况, 也能保证 HeNB本地出口业务连续性, 提高 了用户体验质量。
下面结合具体的场景对本发明实施例提供的建立或修改本地 IP接入承载的 方法进行详细介绍。
在本发明实施例中, 决定触发一个通过 S1 的重分配可以是: Decision to trigger a relocation via Sl。 切换需求消息可以是 Handover Required消息。 转发重定位倚求消息可以是: Forward Relocation Request 消息。 切换倚求消 息可以是: Handover Request消息。切换清求确认消息可以是: Handover Request Acknowledge消息。 更新承载清求消息可以是: Update Bearer Request消息或 爹改 载请求消息: Modify Bearer Request消息。 更新 载请求响应消息可以 是: Update Bearer Request Response消息或修改承载响应消息: Modify Bearer Response消息。
场景一: HeNB本地 LIPA承载建立
在本场景中, 附着请求消息可以是 Attach Request消息。 建立缺省承载请 求消息可以是: Create Default Bearer Request消息或建立会话清求: Create Session Request消息。 建立缺省承载响应消息可以是: Create Default Bearer Response 消息或建立会话相应消息 Create Session Response。 初始上下文建 立清求消息可以是: Initial Context Setup Request消息。 附着接受消息可以 是: Attach Accept消息。无线资源控制连接重配置消息可以是: RRC Connection Reconfiguration消息。
对于 HeNB本地的 L-SGW和 L_PGW, 由于它们设置在 HeNB上, 因此将 L-SGW ID及 L-PGW ID设置与 HeNB具有相同的 ID即 HeNB ID。
LIPA承载的建立有两种方式:
方式一、 UE向核心网请求一个 LIPA业务,核心网为允许执行 LIPA的 UE建 立 LIPA 载。
方式二、 网络允许执行 LIPA业务的 UE在附着过程中可获得核心网下发的 LIPA允许指示信息, 当所述 UE发起 LIPA业务时, 核心网为 UE建立 LIPA承载。
如图 3所示, 方式一的方法流程包括:
31 ) UE发起附着请求消息给基站。 该附着请求消息中携带一个用于 LIPA接 入的 APN, 表明 UE向网络请求 HeNB本地 IP接入 P匪, 如用 LIPA AP 表示。
32 ) 基站根据 S-TMSI (临时移动用户标识) 和选择网络指示得到 MME ( Mobi l i ty Management Ent i ty , 移动性管理实体)。 如果得不到 MME, 通过 MME 选择功能选择丽£。 然后基站在 S1-MME控制信令中前转附着请求消息到丽 E, 在该消息中同时携带基站标识 eNB ID 和 /或 HeNB 的 LIPA 能力, 如用 LB0 Indi ca t ion ( Loca l Breakout Indi ca t i on, 本地出口指示)表示。
33 )若网络允许 UE执行 LIPA, 则在 UE的签约信息中会保存 LIPA允许签约 信息。 丽 E接收到 UE的 LIPA请求, 根据 UE的 LIPA签约信息以及基站标识 eNB ID和 /或 HeNB的 LIPA能力,进行 LIPA接入判断。若允许,则 MME根据 LIPA APN 和 eNB ID,选择到基站本地的 L-PGW和 L_SGW。 MME 向 L_ SGW发送建立缺省承 载清求消息 (建立缺省承载清求消息可以是 Crea te Defaul t Bearer Reques t 消息或建立会话请求)。
34 ) L-SGW在它的 EPS ( Evol ved Packe t Sys tem, 演进分组系统)承载列 表中创建一个入口, 并给 L-PGW发一个建立缺省承载请求消息。
35 ) L-PGW给 L-SGW返回一个建立缺省承载响应消息。
36 ) L-SGW给丽 E返回一个建立缺省承载响应消息。
之后, 执行 23. 401中其它附着流程。
方式二包括:
1 ) UE发起附着请求消息给基站。
2 )基站才艮据 S-TMSI和选择网络指示得到 MME。 如果得不到 MME, 通过 MME 选择功能选择 MME。 然后基站在 S1-MME控制信令中前转附着请求消息到匪 E, 在该消息中同时携带基站标识 eNB ID 和 /或 HeNB 的 LIPA 能力, 如用 LB0
Indi ca t ion表示。
3 )若网络允许 UE执行 LIPA, 则在 UE的签约信息中会保存 LIPA允许签约 信息。 丽 E根据 UE的 LIPA签约信息, 以及 LB0进行 LIPA接入判断。
丽 E选择一个 S-GW发送建立承载请求消息。 若丽 E对 UE的 LIPA接入判断 结果为允许,则在该消息中携带 LIPA允许指示消息,可以用如 LIPA Indi ca t i on 表示。
步骤 4 ) 〜步骤 8 )与 23. 401 中附着过程相同, 这些步骤中发送的消息中 都需要携带 LIPA指示消息 LIPA Indi ca t ion
后续 UE发起 LIPA业务请求消息给丽£。
参照方式一中的步骤 31 ) - 37 ), UE的 LIPA承载建立起来。
本实施例以附着流程为例进行说明, 同样适用于业务请求、 位置更新、 分 离流程, 这里对这些流程不再赘述。
场景二: 重定位到核心网的 S-GW后, 维持本地出口连续性的网络架构
HeNB现有本地出口网络架构基础上增加 S-GW与 L-PGW之间的接口 L_S5。 当 UE位置更新或切换时, 本地 L-SGW重定位为核心网 S-GW。 网络根据 HeNB的 本地出口指示一LBO Indi ca t ion和 /或 HeNB ID (即 L- PGW ID) , LIPA AP 寻址 到 HeNB本地的 L_PGW, 建立核心网 S-GW与 L-PGW之间的承载。 当 UE在 Act ive 模式下,从允许其接入的 HeNB小区切换到一个非 CSG小区时, HeNB收到下链路 LIPA分组时, L-PGW将隧道该分组到核心网的 S_GW,从而保证了 UE可以接收到 来自于 HeNB本地的分组数据。 在本地出口连续性无法保证的前提下, 当 UE 已 经切换到一个非 CSG小区后, 有下链路 LIPA分组到达 HeNB, 但 HeNB不知道如 何传送该分组时, 它将隧道该分组到 PDN GW, 从而将该分组视为非 LIPA业务。
场景三: 本实施例主要解决在 CSG场景下, UE从允许其接入的 CSG小区的 家庭基站覆盖区移动到宏小区后, 保证家庭基站本地出口连续性的方法。
如图 4所示, 该方法包括:
41 ) 源基站决定发起一个基于 S1的切换到目标基站。
42 ) 源基站发送切换需求消息给源丽 E。 切换需求消息可以包括如下参数: 源基站到目标基站透传容器, 目标基站标识, S1 AP原因,选择的位置区标识等。 该消息中携带源基站的 eNB ID、 LBO Indi ca t ion
43 )如果需要重定位匪 E, 源丽 E向目标丽 E发送转发重定位请求消息。 转 发重定位请求消息中可以包括如下参数: 丽 E UE上下文, 源基站到目标基站透
传容器, 目标基站 eNB ID。
44 )执行 23.401中基于 S1切换流程步骤。
45 ) MME根据 LIPA AP 和源基站的 eNB ID, 选择到源基站上的本地 P匪 GW, 即 L-PGW。 源基站本地的 L-SGW重定位为核心网的 SGW。
MME向 SGW发送的更新承载请求消息。承载更新请求消息包含如下参数: eNB
ID,为接收 S1-U上的下链路业务,在目标基站分配的用于接收的 EPS承载的 TEID 等。
46) SGW发送承载更新请求消息给 L-PGW。 收到承载更新请求消息后, L-PGW 更新它的上下文。
47 ) L-PGW返回一个更新承载响应消息给 SGW。 更新承载响应消息包括如下 参数: PDN GW地址, TEID, MSIS匪等。
48 ) SGW发送承载更新响应消息给丽£。 更新承载响应消息包括如下参数: PDN GW地址, TEID等。
通过上述过程 UE从源基站切换至目标基站, 承载更新为源基站本地 LIPA 承载。
场景四:
本场景主要解决的是当 UE进入到允许其接入的家庭基站所在的 TA时, 网 络为 UE建立核心网 S-GW到家庭基站本地 L-PGW之间的本地 IP出口承载, 从而 保证 UE在该 TA内移动时的本地出口业务的连续性。
本实施例主要按照两个步骤进行描述。 首先是在位置更新过程中, 网络进 行判断, 从而为 UE建立本地出口承载; 其次, 在 UE从宏小区向家庭基站覆盖 的小区切换时, 本地出口承载的更新过程。
1. UE在 T AU过程中本地出口承载的建立
如果切换前后没有发生丽 E重定位, 则下面源丽 E和目标丽 E之间的步骤 可以省略不执行, 源 MME和目标 MME为同一个 MME。
如果切换前后没有发生 SGW重定位, 则下面源 SGW和目标 SGW之间的步骤 可以省略不执行, 源 SGW和目标 SGW为同一个 SGW。
触发位置更新过程可以是: Trigger to start TAU procedure。 TAIH青求消 息可以是: TAU Request消息。建立承载清求消息可以是: Create Bearer Request 消息或建立会话清求消息: Create Session Request 消息。 更新承载清求消息 可以是: Update Bearer Request 消息或修改承载清求消息: Modify Bearer
Reques t 消息。 更新承载响应消息可以是: Upda te Bearer Response 消息或修 改 载响应消息: Modi fy Bearer Respinse 消息。 建立 载响应消息可以是: Crea te Bearer Response消息或建立会话响应消息: Crea te Ses s ion Response 消息。
这里为了网络能够找到包含 L-PGW的家庭基站, 需要在 UE的 ACL中增加允 许 UE接入的 CSG小区内可作为本地出口的家庭基站标识即 HeNB ID,用 LIPA HeNB ID表示。
如图 5所示, 该方法包括:
51)决定触发一个 TAU过程。
52 ) UE向基站发送一个 TAU请求消息。 该 TAU请求消息可以包括如下参数:
UE的核心网能力, 上次访问的 TAI, 激活标识, EPS承载状态等。 TAU请求消息 中携带 LIPA APN。
53 )基站前转 UE的 TAU请求消息给目标丽£。
54 ) 丽 E接收到 UE的 TAU请求消息后, 都需要进行两步判断, 首先, 要判 断网络是否允许该 UE请求的 LIPA业务。 判断方法同本地缺省承载建立过程中 的判断过程。
其次, 判断 UE当前所在的 TA中是否有允许 UE接入的 CSG小区。 判断的方 法是: 丽 E判断 UE的 ACL中的 CSG ID是否与该 TA下小区的小区 ID—Ce l l ID 中的 CSG ID相同。 如果相同, 则说明该 TA内包含允许 UE接入的 CSG小区。 若 匪 E判断该 TA下有多于 1个 CSG小区的 CSG ID在 UE的 ACL中, 则根据优先级 顺序, 选择优先级高的 CSG小区。 之后, 丽 E根据 UE的 ACL中的 CSG ID、 LIPA HeNB ID,得到可以为 UE建立本地出口的 HeNB ID。
MME根据 HeNB ID、 LIPA AP 选择到允许 UE接入的、 可作为本地 IP出口的 HeNB上的 L-PGW。
MME选择一个 S-GW发送建立承载请求消息。 该建立承载请求消息可以包括 如下参数: IMSI,承载上下文, MME地址和 TEID, 类型等。
55 ) S-GW向丽 E所选择的 L-PGW发送更新承载请求消息。 更新承载请求消 息可以包含如下参数: S-GW地址和 TEID, RAT类型等。
56 ) L-PGW向 S-GW返回一个更新 7 载响应消息。 该更新 7 载响应消息可以 包括如下参数: MS ISDN, PDN GW地址, TEID等。
57 ) S-GW返回一个建立承载响应消息给丽£。 该建立承载响应消息可以包
括如下参数: S-GW地址和 TEID等。
58 )执行 23. 401中位置更新流程。
通过上述过程为 UE建立起核心网 S-GW到家庭基站本地 L-PGW之间的 LIPA 承载。
2. UE从宏小区移动到 HeNB小区的切换过程
如图 6所示, 该方法包括:
61 ) 源基站决定发起一个基于 S1的切换到目标基站。
62 ) 源基站发送切换需求消息给源丽 E。 切换需求消息可以包括如下参数: 源基站到目标基站透传容器; 目标基站标识, S1 AP原因, 选择的位置区标识 等。
63 )如果需要重定位匪 E, 源丽 E向目标丽 E发送转发重定位请求消息。 转 发重定位请求消息中可以包括如下参数: 丽 E UE上下文, 源基站到目标基站透 传容器, eNB ID。
64 ) 目标 MME发送切换请求消息给目标基站。 切换请求消息可以包括如下 参数: 需建立的 EPS承载, AMBR, S1 AP原因, 源基站到目标基站透传容器, 切 换限制列表等。 该切换请求消息中携带基站本地出口能力指示信息的查询标志, 如 BO Requi red Indi ca t ion表示。
65 )目标基站发送切换请求确认消息给目标 MME。 切换请求确认消息可以包 括如下参数: EPS承载建立结果, 目标基站到源基站透传容器等。 该切换请求确 认消息中携带本地出口能力指示信息, 如用 LBO Indi ca t ion 表示。 LB0 Indi ca t ion也可以不通过步骤 4 ) 的查询过程, 自行在该消息中携带传送给目 标 MME。
66 )执行 23. 401中基于 S1切换流程步骤。
67 ) MME根据 LIPA AP 和 eNB ID,选择目标基站上的本地 P匪 GW,即 L_PGW。 S-GW从核心网重定位为目标基站本地的 L-SGW。
MME向 L-SGW发送的更新承载请求消息。 承载更新请求消息包含如下参数: eNB ID, 为接收 S1-U上的下链路业务, 在目标基站分配的用于接收的 EPS承载 的 TEID等。
68 )L-SGW发送承载更新请求消息给 L-PGW。收到承载更新请求消息后, L-PGW 更新它的上下文。
69 ) L-PGW返回一个更新 7 载响应消息给 L-SGWC 更新 7 载响应消息包括如
下参数: PDN GW地址, TEID, MSIS匪等。
610 ) L-SGW发送承载更新响应消息给丽£。 更新承载响应消息包括如下参 数: P匪 GW地址, TEID等。
通过上述过程 UE从源基站切换至目标基站,承载更新为目标基站本地 LIPA 承载。
本发明实施例提供的建立或修改本地 IP接入承载的方法, 当终端位置切换 时, 移动性管理实体先接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 之后获取演进基站的本地出口能力, 根据演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据 网络网关之间建立或修改本地 IP接入承载。 与现有技术相比, 在 UE需要不断 在 HeNB小区和宏小区切换的情况, 也能保证 HeNB本地出口业务连续性, 提高 了用户体验质量。
实施例二
本发明实施例提供了一种建立或修改本地 IP接入承载的设备,如图 Ί所示, 该设备包括:
接收模块 701, 用于接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 所述演进基站包括源演进基站或目标演进基站, 所述演 进基站标识与本地分组数据网络网关的标识相同;
获取模块 702, 用于获取所述演进基站的本地出口能力;
建立或修改模块 703, 用于根据所述演进基站标识、 所述演进基站的本地出 口能力及本地 IP接入点名, 在服务网关与本地分组数据网络网关之间建立或修 改本地 I P接入承载, 所述服务网关位于核心网或者演进基站。
本发明实施例提供的建立或修改本地 IP接入承载的设备, 当终端位置切换 时, 移动性管理实体先接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 之后获取演进基站的本地出口能力, 根据演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据 网络网关之间建立或修改本地 IP接入承载。 与现有技术相比, 在 UE需要不断 在 HeNB小区和宏小区切换的情况, 也能保证 HeNB本地出口业务连续性, 提高 了用户体验质量。
实施例三
本发明实施例提供了一种建立或修改本地 IP接入承载的设备,如图 8所示,
该设备包括:
接收模块 701, 用于接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 所述演进基站包括源演进基站或目标演进基站, 所述演 进基站标识与本地分组数据网络网关的标识相同;
获取模块 702, 用于获取所述演进基站的本地出口能力;
建立或修改模块 703, 用于根据所述演进基站标识、 所述演进基站的本地出 口能力及本地 IP接入点名, 在服务网关与本地分组数据网络网关之间建立或修 改本地 IP接入承载, 所述服务网关位于核心网或者演进基站。
其中, 所述获取模块 702至少包括以下任一种单元:
第一获取单元 7021, 用于根据所述接收模块 701接收的所述源演进基站发 送的切换请求消息来获取所述源演进基站的本地出口能力的信息;
第二获取单元 7022,用于接收所述目标演进基站发送的切换请求确认消息, 根据所述切换请求确认消息来获取所述目标演进基站的本地出口能力, 其中, 所述切换请求确认消息中携带目标演进基站的本地出口能力的信息;
第三获取单元 7023, 用于查询获取所述目标演进基站的本地出口能力的信 息。
其中, 所述建立或修改模块 703包括:
选择单元 7031, 用于根据所述演进基站标识、 所述演进基站的本地出口能 力及本地 IP接入点名选择服务网关和本地分组数据网络网关;
发送单元 7032, 用于向所选择的服务网关发送修改承载请求消息, 以使所 述服务网关向所述本地分组数据网络网关发送修改承载请求消息并接收所述本 地分组数据网络网关返回的修改承载响应消息;
接收单元 7033, 用于接收所述服务网关返回的修改承载响应消息; 修改单元 7034, 用于当所述接收模块 701接收到所述服务网关返回的修改 承载响应消息后, 将承载修改为核心网服务网关与所选择的本地分组数据网络 网关之间的 7 载。
其中, 该设备还包括:
发送模块 704, 用于通过家庭基站向用户终端发送附着接受消息, 所述附着 接受消息指示所述用户终端被网络授权本地 IP接入。
其中, 在所述发送模块 704 通过家庭基站向用户终端发送附着接受消息之 后, 所述接收模块 701 还用于接收用户终端发送的附着请求消息或跟踪区更新
消息, 所述附着请求消息或跟踪区更新消息中携带有所述本地 IP接入点名。 其中, 该设备还包括:
判断模块 705, 用于判断所述用户终端被授权使用本地 IP接入, 且所述用 户终端所驻留的当前跟踪区中有允许所述用户终端接入的限定用户群组小区存 在。
所述判断模块 705,具体用于判断所述用户终端的允许限定用户群组列表中 的限定用户群组标识是否与所述跟踪区下的小区标识相同; 如果相同,则所述跟 踪区内包含允许所述用户终端接入的限定用户群组小区; 如果所述跟踪区内有 一个以上限定用户群组小区的限定用户群组标识在所述用户终端的允许限定用 户群组列表中,则选择优先级高的限定用户群组小区;
之后, 所述判断模块 705 根据所述用户终端的允许限定用户群组列表中的 限定用户群组标识和本地 IP接入家庭基站标识,得到为所述用户终端建立本地 出口的家庭基站标识。
本发明实施例提供的建立或修改本地 IP接入承载的设备, 当终端位置切换 时, 移动性管理实体先接收演进基站发送的切换请求消息, 所述切换请求消息 中携带演进基站标识, 之后获取演进基站的本地出口能力, 根据演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据 网络网关之间建立或修改本地 IP接入承载。 与现有技术相比, 在 UE需要不断 在 HeNB小区和宏小区切换的情况, 也能保证 HeNB本地出口业务连续性, 提高 了用户体验质量。
本发明实施例适用于 EPS 系统, 但并不仅限于此, 也可以适用于 醫 TS ( Universa l Mobi le Te l ecommuni ca t ion Sys tem, 通用移动通信系统)等其它 移动通信系统。
需要说明的是, EPS系统中的基站是醫 TS系统中基站的演进, 因此称演进 基站 eNB, 本实施例中 NB和 eNB统称为基站。
家庭基站是一种小型的基站, 以下对于基站适用的方案, 对家庭基站同样 适用。
需要说明的是, 在本发明的实施例一中, 当服务网关位于核心网时, 终端 在切换过程中不需要进行服务网关的重定位, 同时本地 IP接入业务的数据路由 通过基站和本地分组数据网路网关之间的直接信道方式实现。
在本发明实施例一中, 是以家庭基站作为本地 IP出口, 建立或修改本地 IP
接入承载的情况为例进行说明。
在本发明实施例一中, 对于 SGW设置在核心网, L-PGW配置在 HeNB的情况, L-PGW ID与 HeNB ID相同。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计算 机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM )或随机存储记忆体 ( Random Access Memory, RAM )等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限于 此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到 的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围 应该以权利要求的保护范围为准。
Claims
1、 一种建立或修改本地 IP接入承载的方法, 其特征在于, 包括: 接收演进基站发送的切换请求消息, 所述切换请求消息中携带演进基站标 识, 所述演进基站包括源演进基站或目标演进基站, 所述演进基站标识与本地 分组数据网络网关的标识相同;
获取所述演进基站的本地出口能力;
根据所述演进基站标识、所述演进基站的本地出口能力及本地 IP接入点名, 在服务网关与本地分组数据网络网关之间建立或修改本地 IP接入承载, 所述服 务网关位于核心网或者演进基站。
2、 根据权利要求 1所述的方法, 其特征在于,
当所述演进基站是源演进基站时, 所述获取所述演进基站的本地出口能力 包括:
由所述源演进基站发送的切换请求消息中获取所述源演进基站的本地出口 能力的信息;
当所述演进基站是目标演进基站时, 所述获取所述目标演进基站的本地出 口能力包括:
接收所述目标演进基站发送的切换请求确认消息, 所述切换请求确认消息 中携带目标演进基站的本地出口能力的信息; 或者,
查询获取所述目标演进基站的本地出口能力的信息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述查询获取所述目标演进 基站的本地出口能力的信息包括:
向目标演进基站发送切换请求消息;
接收目标演进基站返回的切换请求确认消息, 所述切换请求确认消息中携 带目标演进基站本地出口指示, 所述本地出口指示表明目标演进基站的本地出 口能力的信息。
4、 根据权利要求 1所述的方法, 其特征在于, 所述在服务网关与本地分组 数据网络网关之间建立或修改本地 IP接入承载包括:
根据所述演进基站标识、 所述演进基站的本地出口能力及本地 IP接入点名 选择服务网关和本地分组数据网络网关;
向所选择的服务网关发送修改承载请求消息, 以使所述服务网关向所述本 地分组数据网络网关发送修改承载请求消息并接收所述本地分组数据网络网关 返回的爹改 7 载响应消息;
接收所述服务网关返回的修改承载响应消息; 载。
5、 根据权利要求 4所述的方法, 其特征在于, 在所述选择本地分组数据网 络网关之后, 还包括:
将服务网关重定位为家庭基站的本地服务网关。
6、 根据权利要求 1所述的方法, 其特征在于, 在所述接收演进基站发送的 切换请求消息之前, 还包括建立本地 IP接入承载过程, 所述建立本地 IP接入 承载具体包括:
根据本地 IP接入点名和家庭基站标识, 选择本地分组数据网络网关和服务 网关;
向所述服务网关发送建立或修改承载请求消息;
接收所述服务网关返回的建立或修改承载响应消息, 完成在所述服务网关 和本地分组数据网络网关之间的建立或修改承载过程。
7、 根据权利要求 6所述的方法, 其特征在于, 在所述根据本地 IP接入点 名和家庭基站标识, 选择本地分组数据网络网关和服务网关之前, 还包括: 接收基站在 S1-MME控制信令中前转的用户设备发送的附着请求消息, 所述 附着请求消息中携带本地 IP接入点名, 所述 S1-MME控制信令中携带基站标识; 或者,
根据所述本地 IP接入点名和所述基站标识, 选择服务网关和本地分组数据 网络网关, 并向所述服务网关发送建立或修改承载请求消息;
接收所述服务网关返回的建立或修改承载响应消息, 完成在所述服务网关 和所述本地分组数据网络网关之间的本地 IP接入承载的建立或修改过程;
或者,
接收用户终端发送的跟踪区更新消息, 所述跟踪区更新消息中携带所述本 地 IP接入点名;
由用户终端的允许闭合用户群组列表中获取所述家庭基站标识, 所述家庭 基站标识表示允许 UE接入的闭合用户群组小区中可作为本地 IP 出口的家庭基 站标识;
根据所述本地 IP接入点名和所述基站标识, 选择服务网关和本地分组数据 网络网关, 并向所述服务网关发送建立或修改承载请求消息;
接收所述服务网关返回的建立或修改承载响应消息, 完成在所述服务网关 和所述本地分组数据网络网关之间的本地 IP接入承载的建立或修改过程。
8、 根据权利要求 6所述的方法, 其特征在于, 在所述完成在所述服务网关 和本地分组数据网络网关之间的建立或修改承载过程之后, 还包括:
通过家庭基站向用户终端发送附着接受消息, 所述附着接受消息指示所述 用户终端被网络授权本地 IP接入。
9、 根据权利要求 7所述的方法, 其特征在于, 在所述接收用户终端发送的 跟踪区更新消息之后, 还包括:
判断所述用户终端被授权使用本地 IP接入, 且所述用户终端所驻留的当前 跟踪区中有允许所述用户终端接入的限定用户群组小区存在;
所述判断所述用户终端被授权使用本地 IP接入包括: 所述跟踪区下的小区标识相同;
如果相同,则所述跟踪区内包含允许所述用户终端接入的限定用户群组小 区;
如果所述跟踪区内有一个以上限定用户群组小区的限定用户群组标识在所 述用户终端的允许限定用户群组列表中,则选择优先级高的限定用户群组小区, 根据所述用户终端的允许限定用户群组列表中的限定用户群组标识和本地 IP接 入家庭基站标识,得到为所述用户终端建立本地出口的家庭基站标识。
10、 一种建立或修改本地 IP接入承载的设备, 其特征在于, 包括: 接收模块, 用于接收演进基站发送的切换请求消息, 所述切换请求消息中 携带演进基站标识, 所述演进基站包括源演进基站或目标演进基站, 所述演进 基站标识与本地分组数据网络网关的标识相同;
获取模块, 用于获取所述演进基站的本地出口能力;
建立或修改模块, 用于根据所述演进基站标识、 所述演进基站的本地出口 能力及本地 IP接入点名, 在服务网关与本地分组数据网络网关之间建立或修改 本地 IP接入承载, 所述服务网关位于核心网或者演进基站。
11、 根据权利要求 10所述的设备, 其特征在于, 所述获取模块至少包括以 下任一种单元: 第一获取单元: 用于根据所述接收模块接收的所述源演进基站发送的切换 请求消息来获取所述源演进基站的本地出口能力的信息;
第二获取单元: 用于接收所述目标演进基站发送的切换请求确认消息, 根 据所述切换请求确认消息来获取目标演进基站的本地出口能力的信息, 其中, 所述切换请求确认消息中携带目标演进基站的本地出口能力的信息;
第三获取单元: 用于查询获取所述目标演进基站的本地出口能力的信息。
12、 根据权利要求 10或 11所述的设备, 其特征在于, 所述建立或修改模 块包括:
选择单元, 用于根据所述演进基站标识、 所述演进基站的本地出口能力及 本地 I P接入点名选择服务网关和本地分组数据网络网关;
发送单元, 用于向所选择的服务网关发送修改承载请求消息, 以使所述服 务网关向所述本地分组数据网络网关发送修改承载请求消息并接收所述本地分 组数据网络网关返回的修改承载响应消息;
接收单元, 用于接收所述服务网关返回的修改承载响应消息;
修改单元, 用于当所述接收模块接收到所述服务网关返回的修改承载响应 的承载。
13、 根据权利要求 10或 11所述的设备, 其特征在于, 所述设备还包括: 发送模块, 用于通过家庭基站向用户终端发送附着接受消息, 所述附着接 受消息指示所述用户终端被网络授权本地 IP接入。
14、 根据权利要求 10或 11所述的设备, 其特征在于, 所述接收模块, 还 用于接收用户终端发送的附着请求消息或跟踪区更新消息, 所述附着请求消息 或跟踪区更新消息中携带有所述本地 IP接入点名。
15、 根据权利要求 14所述的设备, 其特征在于, 所述设备还包括: 判断模块, 用于判断所述用户终端被授权使用本地 IP接入, 且所述用户终 端所驻留的当前跟踪区中有允许所述用户终端接入的限定用户群组小区存在。
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| EP10818434.2A EP2485529B1 (en) | 2009-09-28 | 2010-09-28 | Method and device for establishing or modifying local ip access bearer |
| US13/432,876 US8743829B2 (en) | 2009-09-28 | 2012-03-28 | Method and device for establishing or modifying local IP access bearer |
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| CN2009101772662A CN102036325B (zh) | 2009-09-28 | 2009-09-28 | 一种建立或修改本地ip接入承载的方法和设备 |
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| EP (1) | EP2485529B1 (zh) |
| CN (1) | CN102036325B (zh) |
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| CN109005602B (zh) * | 2011-07-05 | 2021-03-02 | 北京三星通信技术研究有限公司 | 避免切换失败的方法 |
| CN111698784A (zh) * | 2020-06-24 | 2020-09-22 | 京信通信系统(中国)有限公司 | 数据传输方法、装置、设备和存储介质 |
| CN111698784B (zh) * | 2020-06-24 | 2023-09-26 | 京信网络系统股份有限公司 | 数据传输方法、装置、设备和存储介质 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2485529A4 (en) | 2012-09-26 |
| EP2485529A1 (en) | 2012-08-08 |
| ES2443872T3 (es) | 2014-02-20 |
| US20120182972A1 (en) | 2012-07-19 |
| US8743829B2 (en) | 2014-06-03 |
| EP2485529B1 (en) | 2013-11-06 |
| CN102036325B (zh) | 2013-06-05 |
| CN102036325A (zh) | 2011-04-27 |
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