WO2015062065A1 - 一种与分组数据网络建立连接的装置、设备及方法 - Google Patents

一种与分组数据网络建立连接的装置、设备及方法 Download PDF

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Publication number
WO2015062065A1
WO2015062065A1 PCT/CN2013/086404 CN2013086404W WO2015062065A1 WO 2015062065 A1 WO2015062065 A1 WO 2015062065A1 CN 2013086404 W CN2013086404 W CN 2013086404W WO 2015062065 A1 WO2015062065 A1 WO 2015062065A1
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WIPO (PCT)
Prior art keywords
user equipment
gateway
packet data
data network
anchor gateway
Prior art date
Application number
PCT/CN2013/086404
Other languages
English (en)
French (fr)
Inventor
孙晓姬
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380002321.9A priority Critical patent/CN105265003B/zh
Priority to ES13896662T priority patent/ES2777199T3/es
Priority to EP19195859.4A priority patent/EP3637939B1/en
Priority to PCT/CN2013/086404 priority patent/WO2015062065A1/zh
Priority to EP13896662.7A priority patent/EP3054738B1/en
Priority to JP2016527294A priority patent/JP6386554B2/ja
Publication of WO2015062065A1 publication Critical patent/WO2015062065A1/zh
Priority to US15/140,887 priority patent/US10015834B2/en
Priority to US16/007,803 priority patent/US10728949B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/12Reselecting a serving backbone network switching or routing node
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/22Manipulation of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an apparatus, device, and method for establishing a connection with a packet data network. Background technique
  • the LTE voice service based on the IP Multimedia Subsystem (IMS) network is called the VoLTE service.
  • the service has a separate Access Point Name (APN), and the UE creates a corresponding Packet Data Network (PDN) connection.
  • the default bearer is QCI 5, which is used to carry the Session Initiation Protocol (Session Initiation).
  • Protocol, SIP Policy Control and Charging
  • PCC Policy Control and Charging
  • HSPA high-speed packet access
  • IP voice based on the IMS network will be gradually applied.
  • This voice application is usually called VoHSPA service.
  • the HSPA network is upgraded from the previous UMTS Terrestrial Radio Access Network (UTRAN).
  • the Serving GPRS Support Node (SGSN) on the core network side can be the Serving Gateway.
  • SGW Serving Gateway
  • the connected S4 SGSN may also be a Gn/Gp SGSN connected to a Gateway GPRS Support Node (GGSN).
  • GGSN Gateway GPRS Support Node
  • the serving network elements of the LTE network are respectively Mobility Management Entity (MME), SGW, PDN Gateway (PDN Gateway, PGW) of Area 1 (Area 1).
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • PGW PDN Gateway
  • Area 1 Area 1
  • PGW PDN Gateway
  • the PGW is anchored unchanged. That is, although the UE moves from Areal to Area2, the PGW is still anchored in Area 1.
  • the serving network elements of the HSPA network are the SGSN, SGW, and PGW of Area 1, respectively, and then the PGW is anchored unchanged after moving from Area 1 to Area 2. That is, although the UE moves from Areal to Area2, the PGW is still anchored in Area.
  • the serving network elements of the HSPA network are the SGSN and GGSN of Area 1, respectively, and then moved from Area 1 to Area 2, and the GGSN is anchored unchanged. That is, although the UE moves from Areai to Area2, the GGSN is still anchored in Area 1.
  • the SIP signaling flow and the voice flow are as shown by the second dotted line in Figure la, and the SIP signaling flow and the voice flow are detoured.
  • the VoHSPA service thereby affecting the user's voice.
  • Business experience For example, for the VoLTE voice service, the SIP signaling flow and the voice flow are as shown by the second dotted line in Figure la, and the SIP signaling flow and the voice flow are detoured. The same is true for the VoHSPA service, thereby affecting the user's voice. Business experience.
  • the embodiments of the present invention provide a device, a device, and a method for establishing a connection with a packet data network, so as to improve a user's voice service experience.
  • the first aspect provides an apparatus for establishing a connection with a packet data network, including: a first determining unit, configured to determine, when detecting that a location of a user equipment changes, anchoring the user equipment to a packet data network Whether the area served by the gateway is consistent with the area served by the data forwarding gateway;
  • a sending unit configured to: when the result of the determining is no, send, to the user equipment, a packet data network connection release request that carries a reconnection indication;
  • a receiving unit configured to receive a packet data network reconnection request sent by the user equipment
  • a selecting unit configured to select an anchor gateway that is consistent with an area served by the data forwarding gateway
  • a connecting unit configured to use the An anchoring gateway connects the user equipment to the packet data network.
  • the first determining unit is specifically configured to determine, according to a comparison result of the host name of the anchor gateway and the data forwarding gateway, an area and a location served by the anchor gateway Whether the area served by the data forwarding gateway is consistent.
  • the first determining unit is specifically configured to determine, according to the local anchor gateway list, whether the anchor gateway is in the local anchor gateway list.
  • the device further includes: a second determining unit, configured to determine whether the user equipment currently has a voice service, and a detecting unit, configured to: when the second determining When the result of the unit is YES, it is detected whether the bearer of the current voice of the user equipment is released.
  • the sending unit is specifically configured to: after the detecting unit detects that the current voice of the user equipment is released, send the packet data network connection release request that carries the reconnection indication to the user equipment.
  • the data forwarding gateway is a serving gateway SGW, and the corresponding anchor gateway is a packet data network gateway PGW; or the data forwarding gateway is a Gn/Gp SGSN, and the corresponding anchor gateway is a GGSN.
  • the second aspect provides an apparatus for establishing a connection with a packet data network, including: a sending unit, configured to send, to the user equipment, when detecting that the user equipment roams from the first public land mobile network PLMN to the second PLMN a packet data network connection release request carrying a reconnection indication;
  • a receiving unit configured to receive a packet data network reconnection request sent by the user equipment, and a selecting unit, configured to select an anchor gateway of the second PLMN;
  • the anchor gateway is a packet data network gateway PGW or a GGSN.
  • a third aspect provides an apparatus for establishing a connection with a packet data network, including an input device, an output device, a memory, and a processor;
  • the processor is configured to perform the following steps:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the step of the processor performing the determining whether the area that the user equipment is connected to the anchoring gateway of the packet data network is consistent with the area served by the data forwarding gateway includes:
  • the processor is configured to determine whether an area served by an anchor gateway that is connected to the packet data network by the user equipment is consistent with an area served by the data forwarding gateway. Steps, including:
  • the processor performs, after the step of determining that the area served by the anchor gateway connected to the packet data network by the user equipment is inconsistent with the area served by the data forwarding gateway, and performing the performing to the user equipment Before sending the packet data network connection release request with the reconnection indication, the following steps are also performed:
  • the step of transmitting, by the processor, the packet data network connection release request carrying the reconnection indication to the user equipment, when the result of the determining is no, the method includes:
  • the data forwarding gateway is a serving gateway SGW
  • the corresponding anchor gateway is a packet data network gateway PGW
  • the data forwarding gateway is a Gn/Gp SGSN
  • the corresponding anchor gateway is a GGSN.
  • a fourth aspect provides an apparatus for establishing a connection with a packet data network, including an input device, an output device, a memory, and a processor;
  • the processor is configured to perform the following steps:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the anchor gateway is a packet data network gateway PGW or a GGSN.
  • a method for establishing a connection with a packet data network including:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the determining whether the area that the user equipment is connected to the anchoring network of the packet data network is consistent with the area served by the data forwarding gateway includes:
  • the determining whether the user equipment is connected to an area served by an anchor gateway of a packet data network and an area served by a data forwarding gateway is Consistent, including:
  • the method further includes :
  • the data forwarding gateway is a serving gateway SGW, and the corresponding anchor gateway is a packet data network gateway PGW; or the data forwarding gateway is a Gn/Gp SGSN, and the corresponding anchor gateway is a GGSN.
  • a method for establishing a connection with a packet data network including:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the anchor gateway is a packet data network gateway PGW or GGSN.
  • Figure 1a is a schematic flow chart of an example of a VoLTE service when the location of the user equipment changes;
  • Figure lb is a schematic flow diagram of an example of a VoHSPA service when the location of the user equipment changes;
  • Figure lc is a flow diagram of another example of a VoHSPA service when the location of the user equipment changes;
  • FIG. 1 is a schematic structural diagram of an embodiment of an apparatus for establishing a connection with a packet data network according to the present invention
  • FIG. 3 is a schematic structural diagram of another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention.
  • FIG. 4 is a schematic structural diagram of still another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of an apparatus for establishing a connection with a packet data network according to the present invention
  • FIG. 6 is a schematic structural diagram of another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention.
  • FIG. 7 is a flow chart of an embodiment of a method for establishing a connection with a packet data network according to the present invention.
  • FIG. 8 is a flow chart of another embodiment of a method of establishing a connection with a packet data network according to the present invention.
  • Figure 9 is a flow diagram of still another embodiment of a method of establishing a connection with a packet data network in accordance with the present invention. detailed description
  • Figure 1 is a block diagram showing an embodiment of an apparatus for establishing a connection with a packet data network. As shown in Figure 2, the apparatus 1000 includes:
  • the first determining unit 11 is configured to determine, when detecting that the location of the user equipment changes, whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway.
  • the first determining unit 11 determines that the user equipment is connected to the area served by the anchoring gateway of the packet data network. If the area served by the data forwarding gateway is the same, if the user equipment initiates the voice service, the signaling flow and the voice flow in the prior art will be reversed, which affects the voice service experience of the user.
  • the anchor gateway It is determined whether the area served by the anchor gateway is consistent with the area served by the data forwarding gateway, and the host names of the anchor gateway and the data forwarding gateway are consistent. If they are consistent, the areas served by the two are also consistent; Querying the locally stored anchor gateway list, if the anchor gateway currently connected to the packet data network is not in the local anchor gateway list, that is, the area served by the anchor gateway is considered to be inconsistent with the area served by the data forwarding gateway, otherwise The areas served by the two are consistent.
  • the sending unit 12 is configured to send, when the result of the determining is no, a packet data network connection release request with a reconnection indication to the user equipment.
  • the transmitting unit is required to be
  • the receiving unit 13 is configured to receive a packet data network reconnection request sent by the user equipment.
  • the receiving unit 13 receives a packet data network reconnection request resent by the user equipment.
  • the selecting unit 14 is configured to select an anchor gateway that is consistent with the area served by the data forwarding gateway.
  • the connecting unit 15 is configured to use an anchor network that is consistent with a region served by the data forwarding gateway
  • the user equipment is connected to the packet data network.
  • the selecting unit 14 selects an anchor gateway that is consistent with the area served by the data forwarding gateway, and then the connecting unit 15 passes the selected anchoring gateway.
  • the user equipment is connected to the packet data network, so that the signaling flow and the voice stream are bypassed, and the voice service experience of the user is improved.
  • An apparatus for establishing a connection with a packet data network can avoid the bypass of the signaling flow and the voice flow, and improve the voice service experience of the user.
  • FIG. 3 is a block diagram showing another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention. As shown in FIG. 3, the apparatus 2000 includes:
  • the first determining unit 21 is configured to determine, when detecting that the location of the user equipment changes, whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway.
  • the device 2000 in the VoLTE service, may be an MME, the corresponding data forwarding gateway may be an SGW, and the anchor gateway may be a PGW; in the VoHSPA service, the device 2000 may be an S4 SGSN or a Gn/Gp SGSN.
  • the data forwarding gateway may be an SGW
  • the anchor gateway may be a PGW
  • the anchor gateway may be a GGSN.
  • the UE is attached to the LTE network of the Areal, and establishes a connection with the packet data network, such as the IMS Core.
  • the anchor gateway through which the connection passes is the PGW of the Areal, and the UE is now moved from the Areal to the Area2, and the MME is actually accessed according to the UE.
  • the tracking area selects the SGW, and the MME compares the SGW host name of the current UE with the current PGW host name. If the host name is the same, the SGW and the PGW serve the same area, and the MME does not need to perform the reselection operation of the PGW of the UE.
  • the SGW host name is: topon.s5.gw32.california.west.example.com
  • the host name of the PGW is topon.S5.gw31.california.west.example.com; these two gateways belong to the same region california. West.example.com.
  • the MME determines whether the SGW and the PGW belong to the same area, and can be determined according to the area where the host name is located, and can also be determined by configuring the local PGW list on the MME, that is, all the PGWs that are not in the local configuration PGW list. It is considered to be not the PGW of the current area.
  • the second determining unit 22 is configured to determine whether the user equipment currently has a voice service.
  • the detecting unit 23 is configured to detect, when the result of the second determining unit is yes, the user setting Whether the current voice of the backup is released or not.
  • the sending unit 24 is configured to: after the detecting unit detects that the release of the current voice of the user equipment is completed, send a packet data network connection release request carrying the reconnection indication to the user equipment.
  • the MME determines whether the current UE has a voice service (that is, whether the MME has a QCI 1 bearer for the voice PDN connection). If the UE has a corresponding VoLTE voice service, the MME waits for the UE. After the release of the voice service bearer is complete, the MME initiates a voice PDN connection release, and the release request carries a reconnection indication. If the UE does not have a corresponding VoLTE voice service, the MME directly initiates a voice PDN connection release and triggers the UE to reestablish the voice PDN connection.
  • the receiving unit 25 is configured to receive a packet data network reconnection request sent by the user equipment. According to the above example, after receiving the voice PDN connection release request sent by the MME, the UE initiates a reconnection request for the voice PDN connection.
  • the selecting unit 26 is configured to select an anchor gateway that is consistent with the area served by the data forwarding gateway.
  • the connecting unit 27 is configured to connect the user equipment to the packet data network by using the selected anchor gateway.
  • the MME after receiving the reconnection request of the voice PDN connection of the UE, the MME selects the PGW in the same area as the current SGW to serve the UE.
  • the UE attaches to the LTE network in Area 1, and creates a Packet Data Protocol (PDP) connection.
  • PDP Packet Data Protocol
  • the anchor gateway of the voice PDP connection is the PGW of Area 1.
  • the UE moves from Area 1 to Area 2, and the SGSN selects the SGW according to the tracking area actually accessed by the UE.
  • the SGSN compares the SGW host name of the current UE with the current PGW host name. If the area is the same, the SGSN does not need to do the UE.
  • PGW reselection operation for example, the SGW host name is: topon.s5.gw32.california.west.example.com, PGW ⁇ host name is topon.S5.gw31.california.west.example.com; Belongs to the same region california.west.example.com.
  • the SGSN determines whether the current UE has a voice service (that is, whether the SGSN has a secondary PDP corresponding to the voice service), if the UE has a corresponding VoHSPA After the voice service is released, the SGSN initiates a voice PDP release, and the release request carries a reconnection indication. After receiving the voice PDP release request sent by the SGSN, the UE initiates a voice PDP reconnection request; if the UE does not have a corresponding VoHSPA voice service, the SGSN directly initiates a voice PDP connection release and triggers the UE to re-initiate the voice PDP connection.
  • the SGSN determines whether the SGW and the PGW belong to the same area, and can be judged according to the area where the host name is located in the above; and can also be determined by configuring the local PGW list on the SGSN, that is, all the PGWs that are not in the local configuration PGW list are determined. It is considered to be not the PGW of the current area.
  • the SGSN After receiving the reconnection request of the voice PDP connection of the UE, the SGSN selects the PGW of the same area as the current SGW.
  • the Gn/Gp SGSN determines whether the currently selected SGSN and the GGSN belong to the same area. For UEs that are not in the same area and do not currently have VoHSPA voice service, Then, the SGSN initiates the deletion of the voice PDP of the UE and triggers the UE to reconstruct the voice PDP. In the process of reconstructing the voice PDP, the SGSN selects the GGSN in the same area as the SGSN to serve the UE. After the above processing is completed, the UE moves to Area 2 and registers with the GGSN of Area 2, and the GGSN of the Area 2 UE.
  • the difference between the scenario and the S4 SGSN scenario is as follows:
  • the Gn/Gp SGSN cannot determine whether the SGSN and the GGSN belong to the same area by using the host name. Only the local GGSN list configured on the Gn/Gp SGSN can be used to determine whether the GGSN is in the local list.
  • the device for establishing a connection with the packet data network can avoid the bypass of the signaling flow and the voice flow and improve the voice service experience of the user by making the area served by the anchoring gateway and the data forwarding gateway consistent.
  • the voice service traffic can be localized, the voice service call delay is reduced, and the voice service establishment success rate is improved.
  • FIG. 4 is a block diagram showing still another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention.
  • the apparatus 3000 includes:
  • the sending unit 31 is configured to: when detecting that the user equipment is migrating from the first public land mobile network PLMN to the second PLMN, send a packet data network connection release request that carries the reconnection indication to the user equipment.
  • the receiving unit 32 is configured to receive a packet data network reconnection request sent by the user equipment.
  • the selecting unit 33 is configured to select an anchor gateway of the second PLMN.
  • the connecting unit 34 is configured to connect the user equipment to the packet data network by using the selected anchor gateway.
  • the sending unit 31 needs to send a packet data network connection release request to the user equipment, the request carries a reconnection indication, otherwise, the user equipment moves After that, the original anchor gateway may not be able to connect to the packet data network, affecting the VoLTE or VoHSPA voice service of the user equipment.
  • the user equipment After receiving the packet data network connection release request, the user equipment transmits a packet data network reconnection request to the receiving unit 32.
  • the selecting unit 33 selects the anchoring gateway of the PLMN to which the roaming is performed, and the connecting unit 34 connects the user equipment to the packet data network through the selected anchoring gateway, thereby Enables the user equipment to smoothly perform its VoLTE or VoHSPA voice service.
  • the MME currently registered by the UE determines whether the IMS PDN connection resource exists in the roaming access UE, and if there is an IMS PDN connection. If the current PLMN supports the VoLTE service of the roaming user, the MME instructs the UE to reestablish the IMS PDN connection in the IMS PDN connection deletion request message, and the MME selects the local PGW serving UE for the roaming user in the process of reestablishing the IMS PDN connection.
  • the specific operations are as follows:
  • the UE attaches to a PLMN network and creates a voice PDN connection.
  • the anchor gateway connected to the voice PDN is the PGW of the PLMN1.
  • the UE roams from PLMN1 to PLMN2, and the MME selects SGW2 of the local PLMN for the UE. 3. After the UE roams to a new PLMN, the MME determines that the UE roams from the PLMN1 to the PLMN2 network. If the UE currently has an IMS PDN connection and the PLMN2 supports the VoLTE service of the roaming user, the MME releases the IMS PDN connection of the UE, and indicates the UE. Recreate the IMS PDN connection.
  • the MME After receiving the voice PDN connection establishment request of the UE, the MME selects the current PLMN.
  • the SGSN currently registered by the UE determines whether the IMS PDP resource exists in the roaming access UE, if an IMS PDP connection exists.
  • the resource and the current PLMN network supports the VoLTE service of the roaming user, and the SGSN indicates the UE in the initiate IMS PDP delete request message.
  • the IMS PDP connection is re-established.
  • the SGSN selects the local GGSN to serve the UE for the roaming user.
  • An apparatus for establishing a connection with a packet data network can smoothly perform a voice service and improve a user's voice service experience when a user equipment roams between different public land mobile networks.
  • Figure 5 is a block diagram showing an embodiment of an apparatus for establishing a connection with a packet data network according to the present invention. As shown in FIG. 5, the device 4000 includes:
  • the input device 41, the output device 42, the memory 443, and the processor 44 (the number of the processors 44 in the monitoring device may be one or more, and one processor in Fig. 5 is taken as an example).
  • the input device 41, the output device 42, the memory 443, and the processor 44 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • the memory 33 stores a set of program codes, and the processor 44 is configured to call the program code stored in the memory 33 for performing the following operations:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the processor 44 performs the step of determining whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway, and includes:
  • the processor 44 performs the step of determining whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway, and includes:
  • the processor 44 performs the step of determining that the area served by the anchor gateway connected to the packet data network is inconsistent with the area served by the data forwarding gateway, and Before performing the step of sending the packet data network connection release request carrying the reconnection indication to the user equipment, performing the following steps:
  • the step of transmitting, by the processor, the packet data network connection release request carrying the reconnection indication to the user equipment, when the result of the determining is no, the method includes:
  • the data forwarding gateway is a serving gateway SGW, and the corresponding anchoring gateway is a packet data network gateway PGW; or the data forwarding gateway is a Gn/Gp SGSN, corresponding to the anchoring
  • the gateway is a GGSN.
  • a device that establishes a connection with a packet data network can avoid the bypass of the signaling flow and the voice flow, and improve the voice service experience of the user.
  • FIG. 6 is a block diagram showing another embodiment of an apparatus for establishing a connection with a packet data network according to the present invention.
  • the device 5000 includes:
  • the input device 51, the output device 52, the memory 53, and the processor 54 (the number of the processors 54 in the monitoring device may be one or more, and one processor in Fig. 6 is taken as an example).
  • the input device 51, the output device 52, the memory 53, and the processor 54 may be connected by a bus or other means, wherein the bus connection is exemplified in Fig. 6.
  • the memory 53 stores a set of program codes
  • the processor 54 is configured to call the program code stored in the memory 53 for performing the following operations:
  • the user equipment is connected to the packet data network by the selected anchoring gateway.
  • the anchoring gateway is a packet data network gateway PGW or GGSN.
  • a device that establishes a connection with a packet data network can enable a user equipment to smoothly perform voice services when roaming between different public land mobile networks, thereby improving the voice service experience of the user.
  • FIG. 7 is a flow diagram of one embodiment of a method of establishing a connection with a packet data network in accordance with the present invention. As shown in Figure 7, the method includes the following steps:
  • Step S101 When it is detected that the location of the user equipment changes, it is determined whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway; if yes, go to step S106. Otherwise, go to step S102.
  • the location of the user equipment changes, for example, from the coverage area of one area to the coverage area of another area, it is determined that the user equipment is connected to the area served by the anchor gateway of the packet data network and the area served by the data forwarding gateway. If the packets are inconsistent, when the user equipment initiates the voice service, the bypass of the signaling flow and the voice flow in the prior art will occur, affecting the voice service experience of the user; if they are consistent, the connection with the packet data network is continued.
  • the anchor gateway It is determined whether the area served by the anchor gateway is consistent with the area served by the data forwarding gateway, and the host names of the anchor gateway and the data forwarding gateway are consistent. If they are consistent, the areas served by the two are also consistent; Querying the locally stored anchor gateway list, if the anchor gateway currently connected to the packet data network is not in the local anchor gateway list, that is, the area served by the anchor gateway is considered to be inconsistent with the area served by the data forwarding gateway, otherwise The areas served by the two are consistent.
  • Step S102 Send a packet data network connection release request carrying a reconnection indication to the user equipment.
  • the packet data network connection release request is sent to the user equipment, and the release request carries the re-request Connection instructions.
  • Step S103 Receive a packet data network reconnection request sent by the user equipment.
  • Step S104 selecting an anchor gateway that is consistent with the area served by the data forwarding gateway.
  • Step S105 connecting the user equipment to the packet data network by using the selected anchor gateway.
  • Step S106 continuing the connection with the packet data network.
  • a method for establishing a connection with a packet data network can avoid the bypass of the signaling flow and the voice flow, and improve the voice service experience of the user.
  • FIG. 8 is a flow diagram of another embodiment of a method of establishing a connection with a packet data network in accordance with the present invention. As shown in Figure 8, the method includes the following steps:
  • Step S201 When it is detected that the location of the user equipment changes, it is determined whether the area served by the anchoring gateway of the user equipment connected to the packet data network is consistent with the area served by the data forwarding gateway; if yes, go to step S208. Otherwise, go to step S202.
  • the device 2000 in the VoLTE service, may be an MME, the corresponding data forwarding gateway may be an SGW, and the anchor gateway may be a PGW; in the VoHSPA service, the device 2000 may be an S4 SGSN or a Gn/Gp SGSN.
  • the data forwarding gateway may be an SGW
  • the anchor gateway may be a PGW
  • the anchor gateway may be a GGSN.
  • the UE is attached to the LTE network of the Areal, and establishes a connection with the packet data network, such as the IMS Core.
  • the anchor gateway through which the connection passes is the PGW of the Areal, and the UE is now moved from the Areal to the Area 2, and the MME is actually accessed according to the UE.
  • the tracking area selects the SGW, and the MME compares the SGW host name of the current UE with the current PGW host name. If the host name is the same, the SGW and the PGW serve the same area, and the MME does not need to perform the reselection operation of the PGW of the UE.
  • the SGW host name is: topon.s5.gw32.california.west.example.com
  • the host name of the PGW is topon.S5.gw31.california.west.example.com; these two gateways belong to the same region california. West.example.com.
  • the MME determines whether the SGW and the PGW belong to the same area, and can be determined according to the area where the host name is located, and can also be determined by configuring the local PGW list on the MME, that is, all the PGWs that are not in the local configuration PGW list. It is considered to be not the PGW of the current area.
  • Step S202 Determine whether the user equipment currently has a voice service; if yes, go to step S203; otherwise, go to step S204.
  • Step S203 detecting that the release of the current voice of the user equipment is completed.
  • Step S204 Send a packet data network connection release request carrying a reconnection indication to the user equipment.
  • the MME determines whether the current UE has a voice service (that is, whether the MME has a voice PDN connected QCI 1 bearer). If the UE has a corresponding VoLTE voice service, the MME waits for the UE. After the release of the voice service bearer is complete, the MME initiates a voice PDN connection release, and the release request carries a reconnection indication. If the UE does not have a corresponding VoLTE voice service, the MME directly initiates a voice PDN connection release and triggers the UE to reestablish the voice PDN connection.
  • a voice service that is, whether the MME has a voice PDN connected QCI 1 bearer. If the UE has a corresponding VoLTE voice service, the MME waits for the UE. After the release of the voice service bearer is complete, the MME initiates a voice PDN connection release, and the release request carries a reconnection indication. If the UE does not have a corresponding VoLTE voice service, the
  • Step S205 Receive a packet data network reconnection request sent by the user equipment.
  • the UE after receiving the voice PDN connection release request sent by the MME, the UE initiates a reconnection request for the voice PDN connection.
  • Step S206 selecting an anchor gateway that is consistent with the area served by the data forwarding gateway.
  • Step S207 connecting the user equipment to the packet data network by using the selected anchor gateway.
  • Step S208 continuing the connection with the packet data network.
  • the MME after receiving the reconnection request of the voice PDN connection of the UE, the MME selects the PGW in the same area as the current SGW to serve the UE.
  • the UE attaches to the LTE network in Area 1, and creates a Packet Data Protocol (PDP) connection.
  • PDP Packet Data Protocol
  • the anchor gateway of the voice PDP connection is the PGW of Area 1.
  • the UE moves from Area 1 to Area 2, and the SGSN selects the SGW according to the tracking area actually accessed by the UE.
  • the SGSN compares the SGW host name of the current UE with the current PGW host name. If the area is the same, the SGSN does not need to do the UE.
  • PGW reselection operation for example, the SGW host name is: topon.s5.gw32.california.west.example.com, PGW ⁇ host name is topon.S5.gw31.california.west.example.com; Belongs to the same region california.west.example.com.
  • the SGSN determines whether the current UE has a voice service (that is, whether the SGSN has a secondary PDP corresponding to the voice service). If the UE has a corresponding VoHSPA voice service, the voice service of the UE such as the SGSN After the PDP release is complete, the SGSN initiates a voice PDP release, and the release request carries a reconnection indication. The UE receives the voice PDP sent by the SGSN. After the request is released, the voice PDP reconnection request is initiated. If the UE does not have the corresponding VoHSPA voice service, the SGSN directly initiates the voice PDP connection release and triggers the UE to re-initiate the voice PDP connection.
  • the SGSN determines whether the SGW and the PGW belong to the same area, and can be judged according to the area where the host name is located in the above; and can also be determined by configuring the local PGW list on the SGSN, that is, all the PGWs that are not in the local configuration PGW list are determined. It is considered to be not the PGW of the current area.
  • the SGSN After receiving the reconnection request of the voice PDP connection of the UE, the SGSN selects the PGW of the same area as the current SGW.
  • the Gn/Gp SGSN determines whether the currently selected SGSN and the GGSN belong to the same area. For UEs that are not in the same area and do not currently have VoHSPA voice service, Then, the SGSN initiates the deletion of the voice PDP of the UE and triggers the UE to reconstruct the voice PDP. In the process of reconstructing the voice PDP, the SGSN selects the GGSN in the same area as the SGSN to serve the UE. After the above processing is completed, the UE moves to Area 2 and registers with the GGSN of Area 2, and the GGSN of Area 2 serves the UE.
  • the difference between the scenario and the S4 SGSN scenario is as follows:
  • the Gn/Gp SGSN cannot determine whether the SGSN and the GGSN belong to the same area by using the host name. Only the local GGSN list configured on the Gn/Gp SGSN can be used to determine whether the GGSN is in the local list.
  • the method for establishing a connection with a packet data network can avoid the bypass of the signaling flow and the voice flow and improve the voice service experience of the user by making the anchor gateway and the area served by the data forwarding gateway consistent.
  • the voice service traffic can be localized, the voice service call delay is reduced, and the voice service establishment success rate is improved.
  • FIG. 9 is a flow diagram of still another embodiment of a method of establishing a connection with a packet data network in accordance with the present invention. As shown in Figure 9, the method includes the following steps:
  • Step S301 When detecting that the user equipment roams from the first public land mobile network PLMN to the second PLMN, send a packet data network connection release request carrying the reconnection indication to the user equipment.
  • Step S302 Receive a packet data network reconnection request sent by the user equipment.
  • Step S303 selecting an anchor gateway of the second PLMN.
  • Step S304 connecting the user equipment to the number of packets by using the selected anchor gateway According to the network.
  • Different PLMNs are managed by different operators.
  • a packet data network connection release request needs to be sent to the user equipment, and the request carries a reconnection. Indication, otherwise, after the user equipment moves, the original anchor gateway may not be able to connect to the packet data network, affecting the VoLTE or VoHSPA voice service of the user equipment.
  • the user equipment After receiving the packet data network connection release request, the user equipment sends a packet data network reconnection request. After receiving the packet data network reconnection request sent by the user equipment, the user equipment is connected to the packet data network through the anchoring gateway of the PLMN roaming, so that the user equipment can smoothly perform its VoLTE or VoHSPA voice service.
  • the MME currently registered by the UE determines whether the IMS PDN connection resource exists in the roaming access UE, and if there is an IMS PDN connection.
  • the MME and the current PLMN support the VoLTE service of the roaming user, the MME instructs the UE to reestablish the IMS PDN connection in the IMS PDN connection deletion request message, and the MME selects the local PGW serving UE for the roaming user in the process of reestablishing the IMS PDN connection.
  • the specific operations are as follows:
  • the UE attaches to a PLMN network and creates a voice PDN connection.
  • the anchor gateway connected to the voice PDN is the PGW of the PLMN1.
  • the UE roams from PLMN1 to PLMN2, and the MME selects SGW2 of the local PLMN for the UE. 3. After the UE roams to a new PLMN, the MME determines that the UE roams from the PLMN1 to the PLMN2 network. If the UE currently has an IMS PDN connection and the PLMN2 supports the VoLTE service of the roaming user, the MME releases the IMS PDN connection of the UE, and indicates the UE. Recreate the IMS PDN connection.
  • the MME After receiving the voice PDN connection establishment request of the UE, the MME selects the PGW of the current PLMN.
  • the SGSN After the UE roams from the coverage area of one PLMN to the coverage area of another PLMN, the SGSN currently registered by the UE determines whether the IMS PDP resource exists in the roaming access UE, if an IMS PDP connection exists. If the current PLMN network supports the VoLTE service of the roaming user, the SGSN instructs the UE to reestablish the IMS PDP connection in the IMS PDP Delete Request message, and the SGSN selects the local GGSN serving UE for the roaming user in the process of reestablishing the IMS PDP connection. .
  • a method for establishing a connection with a packet data network may be used.
  • the user equipment When roaming between different public land mobile networks, the user equipment can smoothly perform voice services and improve the voice service experience of users.
  • the disclosed apparatus and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another device, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some communication interface, device or module, and may be in electrical, mechanical or other form.
  • the modules described as separate components may or may not be physically separate, and may also be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

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Abstract

一种与分组数据网络建立连接的装置,包括:第一判断单元(11),用于当检测到用户设备的位置发生变化时,判断用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致;发送单元(12),用于当判断的结果为否时,向用户设备发送携带重新连接指示的分组数据网络连接释放请求;接收单元(13),用于接收用户设备发送的分组数据网络重新连接请求;选择单元(14),用于选择与数据转发网关所服务的区域一致的锚定网关;连接单元(15),用于通过选择的锚定网关将用户设备连接至分组数据网络。本发明还公开了相应的设备和方法。采用本发明,可以提高用户的语音业务体验。

Description

一种与分组数据网络建立连接的装置、 设备及方法 技术领域
本发明涉及通信技术领域, 尤其涉及一种与分组数据网络建立连接的装 置、 设备及方法。 背景技术
当用户设备 (User Equipment, UE)正在系统架构演进 (System Architecture Evolution , S ΑΕ)/长期演进 (Long Term Evolution , LTE)网络的分组交换 ( Packet Switch, PS )域上进行网络电话(Voice over Internet Protocol, VOIP )业务时, 基于 IP多媒体系统 (IP Multimedia Subsystem, IMS)网络的 LTE语音业务称为 VoLTE业务。 该业务有一个独立的接入点 (Access Point Name, APN), UE会 创建对应的分组数据网络 (Packet Data Network, PDN)连接,缺省承载为 QCI 5 , 用于承载会话发起协议 (Session Initiation Protocol, SIP)信令, 当 UE有语音业 务时, 策略控制和计费 (Policy Control and Charging, PCC ) 架构触发网络侧 创建 QCI 1的专有承载用于承载语音。
高速分组接入 (High-Speed Packet Access, HSPA)网络部署后, 基于 IMS 网络的 IP语音将逐步应用, 这种语音应用通常称为 VoHSPA业务。 HSPA网 络中是由以前的 UMTS 陆地无线接入网(UMTS Terrestrial Radio Access Network, UTRAN)升级而来, 核心网侧的服务 GPRS支持节点 (Serving GPRS Support Node, SGSN)可以是跟服务网关 (Serving Gateway, SGW)连接的 S4 SGSN,也可以是跟网关 GPRS支持节点 (Gateway GPRS Support Node, GGSN) 连接的 Gn/Gp SGSN。
如图 la所示, 当 UE在 LTE网络附着, LTE网络的服务网元分别是区域 l(Area 1)的移动性管理网元 (Mobility Management Entity, MME)、 SGW, PDN 网关 (PDN Gateway, PGW), 随后从区域 1移动至区域 2(Area 2)后, PGW是 锚定不变。即该 UE虽然从 Areal移动至 Area2,但是 PGW仍然锚定在 Area 1。
同样, 如图 lb所示, 当 UE在 HSPA网络附着, HSPA网络的服务网元分 别是 Area 1的 SGSN、 SGW, PGW, 随后从 Area 1移动至 Area 2后, PGW 是锚定不变。即该 UE虽然从 Areal移动至 Area2,但是 PGW仍然锚定在 Area 同样, 如图 lc所示, 当 UE在 HSPA网络附着, HSPA网络的服务网元分 别是 Area l的 SGSN、 GGSN, 随后从 Area 1移动至 Area 2后, GGSN是锚定 不变。 即该 UE虽然从 Areal移动至 Area2, 但是 GGSN仍然锚定在 Area 1。
例如, 对于 VoLTE语音业务来讲, SIP信令流和语音流如图 la中第二根 虚线所示, SIP信令流和语音流存在迂回, 对于 VoHSPA业务来讲也是如此, 从而影响用户的语音业务体验。
另一方面, 用户设备在不同的公共陆地移动网络 (Public Land Mobile Network, PLMN)间漫游时, 仍然通过原有 PLMN的锚定网关进行语音业务, 而不同运营商之间一般不能互通, 则用户设备不能顺利进行语音业务,也会影 响到用户的语音业务体验。 发明内容
本发明实施例提供了一种与分组数据网络建立连接的装置、 设备及方法, 以提高用户的语音业务体验。
第一方面, 提供了一种与分组数据网络建立连接的装置, 包括: 第一判断单元, 用于当检测到用户设备的位置发生变化时, 判断所述用户 设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的 区域是否一致;
发送单元, 用于当所述判断的结果为否时, 则向所述用户设备发送携带重 新连接指示的分组数据网络连接释放请求;
接收单元, 用于接收所述用户设备发送的分组数据网络重新连接请求; 选择单元, 用于选择与所述数据转发网关所服务的区域一致的锚定网关; 连接单元,用于通过所述选择的锚定网关将所述用户设备连接至所述分组 数据网络。
在第一种可能的实现方式中,所述第一判断单元具体用于根据所述锚定网 关和所述数据转发网关的主机名称的比较结果,判断所述锚定网关所服务的区 域与所述数据转发网关所服务的区域是否一致。
结合第一方面,在第二种可能的实现方式中, 所述第一判断单元具体用于 根据本地锚定网关列表, 判断所述锚定网关是否在所述本地锚定网关列表中。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种 可能的实现方式, 在第三种可能的实现方式中, 所述装置还包括: 第二判断单元, 用于判断所述用户设备当前是否具有语音业务; 检测单元, 用于当所述第二判断单元的结果为是时,检测所述用户设备的 当前语音的承载是否释放完成。
所述发送单元具体用于若所述检测单元检测到所述用户设备的当前语音 的承载释放完成后,向所述用户设备发送所述携带重新连接指示的分组数据网 络连接释放请求。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种 可能的实现方式或第一方面的第三种可能的实现方式,在第四种可能的实现方 式中, 所述数据转发网关为服务网关 SGW, 对应的所述锚定网关为分组数据 网络网关 PGW; 或所述数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关 为 GGSN。 第二方面, 提供了一种与分组数据网络建立连接的装置, 包括: 发送单元, 用于当检测到用户设备由第一公共陆地移动网络 PLMN漫游 至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连 接释放请求;
接收单元, 用于接收所述用户设备发送的分组数据网络重新连接请求; 选择单元, 用于选择所述第二 PLMN的锚定网关;
连接单元,用于通过所述选择的锚定网关将所述用户设备连接至所述分组 数据网络。 在第一种可能的实现方式中, 所述锚定网关为分组数据网络网关 PGW或 GGSN。 第三方面, 提供了一种与分组数据网络建立连接的设备, 包括输入装置、 输出装置、 存储器和处理器;
其中, 所述处理器用于执行如下步骤:
当检测到用户设备的位置发生变化时,判断所述用户设备连接至分组数据 网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致; 当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择与所述数据转发网关所服务的区域一致的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。 在第一种可能的实现方式中,所述处理器执行所述判断所述用户设备连接 至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是否 一致的步骤, 包括:
根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述 锚定网关所服务的区域与所述数据转发网关所服务的区域是否一致。
结合第三方面,在第二种可能的实现方式中, 所述处理器执行所述判断所 述用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所 服务的区域是否一致的步骤, 包括:
根据本地锚定网关列表,判断所述锚定网关是否在所述本地锚定网关列表 中。
结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式, 在第三种可能的实现方式中,
所述处理器执行所述当所述判断所述用户设备连接至分组数据网络的锚 定网关所服务的区域与数据转发网关所服务的区域不一致的步骤之后,以及执 行所述向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求 的步骤之前, 还执行如下步骤:
判断所述用户设备当前是否具有语音业务;
若判断的结果为是, 则检测所述用户设备的当前语音的承载是否释放完 成。
所述处理器执行所述当所述判断的结果为否时,则向所述用户设备发送携 带重新连接指示的分组数据网络连接释放请求的步骤, 包括:
若检测到所述用户设备的当前语音的承载释放完成后,向所述用户设备发 送所述携带重新连接指示的分组数据网络连接释放请求。 结合第三方面或第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式或第三方面的第三种可能的实现方式,在第四种可能的实现方 式中, 所述数据转发网关为服务网关 SGW, 对应的所述锚定网关为分组数据 网络网关 PGW; 或所述数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关 为 GGSN。 第四方面, 提供了一种与分组数据网络建立连接的设备, 包括输入装置、 输出装置、 存储器和处理器;
其中, 所述处理器用于执行如下步骤:
当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
在第一种可能的实现方式中, 所述锚定网关为分组数据网络网关 PGW或 GGSN。 第五方面, 提供了一种与分组数据网络建立连接的方法, 包括:
当检测到用户设备的位置发生变化时,判断所述用户设备连接至分组数据 网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致;
当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择与所述数据转发网关所服务的区域一致的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
在第一种可能的实现方式中,所述判断所述用户设备连接至分组数据网络 的锚定网关所服务的区域与数据转发网关所服务的区域是否一致, 包括:
根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述 锚定网关所服务的区域与所述数据转发网关所服务的区域是否一致。
结合第五方面,在第二种可能的实现方式中, 所述判断所述用户设备连接 至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是否 一致, 包括:
根据本地锚定网关列表,判断所述锚定网关是否在所述本地锚定网关列表 中。结合第五方面或第五方面的第一种可能的实现方式或第五方面的第二种可 能的实现方式,在第三种可能的实现方式中, 所述当所述判断所述用户设备连 接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域不 一致之后,以及所述向所述用户设备发送携带重新连接指示的分组数据网络连 接释放请求之前, 所述方法还包括:
判断所述用户设备当前是否具有语音业务;
若判断的结果为是, 则检测所述用户设备的当前语音的承载是否释放完 成。
所述当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示 的分组数据网络连接释放请求, 包括:
若检测到所述用户设备的当前语音的承载释放完成,则向所述用户设备发 送所述携带重新连接指示的分组数据网络连接释放请求。结合第五方面或第五 方面的第一种可能的实现方式或第五方面的第二种可能的实现方式或第五方 面的第三种可能的实现方式,在第四种可能的实现方式中, 所述数据转发网关 为服务网关 SGW, 对应的所述锚定网关为分组数据网络网关 PGW; 或所述数 据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关为 GGSN。 第六方面, 提供了一种与分组数据网络建立连接的方法, 包括:
当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。在第 一种可能的实现方式中, 所述锚定网关为分组数据网络网关 PGW或 GGSN。 采用本发明实施例提供的一种与分组数据网络建立连接的装置、设备及方 法的技术方案, 可以提高用户的语音业务体验。 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 例中所需要使用的附图作筒单地介绍,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他的附图。
图 1 a为用户设备的位置发生变化时 VoLTE业务的一个示例的流程示意 图;
图 lb为用户设备的位置发生变化时 VoHSPA业务的一个示例的流程示意 图;
图 lc为用户设备的位置发生变化时 VoHSPA业务的另一个示例的流程示 意图;
图 为本发明一种与分组数据网络建立连接的装置的一个实施例的结构 示意图;
图 3 为本发明一种与分组数据网络建立连接的装置的另一个实施例的结 构示意图;
图 4 为本发明一种与分组数据网络建立连接的装置的又一个实施例的结 构示意图;
图 5 为本发明一种与分组数据网络建立连接的设备的一个实施例的结构 示意图;
图 6 为本发明一种与分组数据网络建立连接的设备的另一个实施例的结 构示意图;
图 7 为本发明一种与分组数据网络建立连接的方法的一个实施例的流程 图;
图 8 为本发明一种与分组数据网络建立连接的方法的另一个实施例的流 程图;
图 9 为本发明一种与分组数据网络建立连接的方法的又一个实施例的流 程图。 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作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
图 为本发明一种与分组数据网络建立连接的装置的一个实施例的结构 示意图。 如图 2所示, 该装置 1000包括:
第一判断单元 11 , 用于当检测到用户设备的位置发生变化时, 判断所述 用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服 务的区域是否一致。
当用户设备的位置发生变化,例如从一个区域的覆盖区移动到另一个区域 的覆盖区时, 需要由第一判断单元 11判断该用户设备连接至分组数据网络的 锚定网关所服务的区域与数据转发网关所服务的区域是否一致, 如果不一致, 在用户设备发起语音业务时,将发生现有技术中的信令流和语音流的迂回,影 响用户的语音业务体验。
判断锚定网关所服务的区域与数据转发网关所服务的区域是否一致,可以 比较锚定网关和数据转发网关的主机名称是否一致,如果一致, 则两者所服务 的区域也一致; 也可以通过查询本地存储的锚定网关列表,如果当前连接至分 组数据网络的锚定网关不在该本地锚定网关列表中,即认为锚定网关所服务的 区域与数据转发网关所服务的区域不一致,否则认为两者所服务的区域是一致 的。
发送单元 12, 用于当所述判断的结果为否时, 则向所述用户设备发送携 带重新连接指示的分组数据网络连接释放请求。
当第一判断单元 11判断的结果为该用户设备连接至分组数据网络的锚定 网关所服务的区域与数据转发网关所服务的区域不一致时, 则要由发送单元
12 向用户设备发送分组数据网络连接释放请求, 该释放请求中携带重新连接 指示。
接收单元 13, 用于接收所述用户设备发送的分组数据网络重新连接请求。 接收单元 13接收用户设备重新发送的分组数据网络重新连接请求。
选择单元 14, 用于选择与所述数据转发网关所服务的区域一致的锚定网 关。
连接单元 15, 用于通过与所述数据转发网关所服务的区域一致的锚定网 关将所述用户设备连接至所述分组数据网络。
当接收单元 13接收到用户设备发送的分组数据网络重新连接请求时, 这 时, 选择单元 14选择与数据转发网关所服务的区域一致的锚定网关, 然后连 接单元 15通过该选择的锚定网关将该用户设备连接至该分组数据网络, 这样 可以避免信令流和和语音流的迂回, 提高用户的语音业务体验。
根据本发明实施例提供的一种与分组数据网络建立连接的装置,可以避免 信令流和和语音流的迂回, 提高用户的语音业务体验。
图 3 为本发明一种与分组数据网络建立连接的装置的另一个实施例的结 构示意图。 如图 3所示, 该装置 2000包括:
第一判断单元 21 , 用于当检测到用户设备的位置发生变化时, 判断所述 用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服 务的区域是否一致。
在本发明实施例中, 在 VoLTE业务中, 装置 2000可以是 MME, 相应的 数据转发网关可以是 SGW, 锚定网关可以是 PGW; 在 VoHSPA业务中, 装 置 2000可以是 S4 SGSN或 Gn/Gp SGSN, 对应 S4 SGSN, 数据转发网关可以 是 SGW, 锚定网关可以是 PGW, 对应 Gn/Gp SGSN, 数据转发网关可以是 Gn/Gp SGSN, 锚定网关可以是 GGSN。
例如, UE在 Areal的 LTE网络附着, 并与分组数据网络例如 IMS Core 建立了连接, 该连接通过的锚定网关为 Areal的 PGW, UE现在由 Areal移动 至 Area2 , MME会根据 UE实际接入的跟踪区选择 SGW, MME比较当前 UE 的 SGW主机名称和当前 PGW主机名称, 若主机名称一致, 则 SGW和 PGW 所服务的区域相同,则 MME无需做该 UE的 PGW的重选操作。例如 SGW主 机名称为: topon.s5.gw32.california.west.example.com , PGW 的主机名称为 topon.S5.gw31.california.west.example.com; 这两个网关就属于同一个区域 california.west.example.com。
MME判断 SGW和 PGW是否属于同一个区域,除了可以根据上面所述的 主机名称所在的区域来判断,还可以通过 MME上配置本地 PGW列表来判断, 即所有不在本地配置 PGW列表范围内的 PGW都认为不是当前区域的 PGW。
第二判断单元 22, 用于判断所述用户设备当前是否具有语音业务。
检测单元 23, 用于当所述第二判断单元的结果为是时, 检测所述用户设 备的当前语音的承载是否释放完成。
发送单元 24, 用于若所述检测单元检测到所述用户设备的当前语音的承 载释放完成后,向所述用户设备发送携带重新连接指示的分组数据网络连接释 放请求。
根据上面的举例, 若 SGW和 PGW所在区域不同, MME再判断当前 UE 是否有语音业务(即 MME是否存在语音 PDN连接的 QCI 1承载) , 若 UE 有对应 VoLTE语音业务,则 MME等该 UE的语音业务承载释放完成后, MME 发起语音 PDN连接释放, 释放请求中携带重新连接指示。 若 UE 没有对应 VoLTE语音业务, 则 MME直接发起语音 PDN连接释放并触发 UE重建此语 音 PDN连接。
接收单元 25 , 用于接收所述用户设备发送的分组数据网络重新连接请求。 根据上面的举例, UE收到 MME发送的语音 PDN连接释放请求后,便发 起语音 PDN连接的重新连接请求。
选择单元 26, 用于选择与所述数据转发网关所服务的区域一致的锚定网 关。
连接单元 27, 用于通过所述选择的锚定网关将所述用户设备连接至所述 分组数据网络。
根据上面的举例, MME收到该 UE的语音 PDN连接的重新连接请求后, 选择和当前 SGW同一个区域的 PGW服务该 UE。
对于由 S4 SGSN控制的 VoHSPA业务, 其流程如下:
1、 UE在 Area 1的 LTE网络附着,并创建了语音分组数据协议 (Packet Data Protocol, PDP)连接, 语音 PDP连接的锚定网关为 Area 1的 PGW。
2、 UE由 Area 1移动至 Area 2, SGSN会根据 UE实际接入的跟踪区选择 SGW, SGSN比较当前 UE的 SGW主机名称和当前 PGW主机名称, 若所在 区域相同, 则 SGSN无需做该 UE的 PGW的重选操作; 例如 SGW主机名称 为 : topon.s5.gw32.california.west.example.com , PGW ό 主机名 称为 topon.S5.gw31.california.west.example.com; 这两个网关就属于同一个区域 california.west.example.com。
3、 若 SGW和 PGW所在区域不同, SGSN再判断当前 UE是否有语音业 务(即, SGSN是否存在语音业务对应的二次 PDP ) , 若 UE有对应 VoHSPA 语音业务, 则 SGSN等该 UE的语音业务 PDP释放完成后, SGSN发起语音 PDP释放, 释放请求中携带重新连接指示。 UE收到 SGSN发送的语音 PDP 释放请求后, 便发起语音 PDP的重新连接请求; 若 UE没有对应 VoHSPA语 音业务,则 SGSN直接发起语音 PDP连接释放并触发 UE重新发起此语音 PDP 连接。
SGSN判断 SGW和 PGW是否属于同一个区域, 除了可以根据上面所述 的主机名所在的区域来判断;还可以通过 SGSN上配置本地 PGW列表来判断, 即所有不在本地配置 PGW列表范围内的 PGW都认为不是当前区域的 PGW。
4、 SGSN收到该 UE的语音 PDP连接的重新连接请求后,选择和当前 SGW 同一个区域的 PGW月良务该 UE。
对于由 Gn/Gp SGSN控制的 VoHSPA业务, 其流程为:
UE从一个 Area l的覆盖区移动至 Area 2的覆盖区后, Gn/Gp SGSN判断 当前选择的 SGSN和 GGSN是否属于同一个区域, 对于两者不在同一个区域 且当前没有 VoHSPA语音业务的 UE,则 SGSN发起该 UE的语音 PDP的删除 并触发 UE重建语音 PDP, 在重建语音 PDP过程中, SGSN选择和 SGSN相 同区域的 GGSN服务 UE。上述处理完成后, UE移动至 Area 2后便注册在 Area 2的 GGSN, 由 Area 2的 GGSN月^务 UE。
和 S4 SGSN场景的不同点在于: Gn/Gp SGSN无法通过主机名判断 SGSN 和 GGSN是否属于同一个区域, 只能通过 Gn/Gp SGSN上配置的本地 GGSN 列表判断 GGSN是否在本地列表中。
根据本发明实施例提供的一种与分组数据网络建立连接的装置,通过使得 锚定网关和数据转发网关所服务的区域一致, 可以避免信令流和语音流的迂 回, 提高用户的语音业务体验; 也可以保证语音业务流量本地化, 使语音业务 呼叫时延降低, 提高语音业务建立成功率。
图 4 为本发明一种与分组数据网络建立连接的装置的又一个实施例的结 构示意图。 如图 4所示, 该装置 3000包括:
发送单元 31 , 用于当检测到用户设备由第一公共陆地移动网络 PLMN漫 游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络 连接释放请求。
接收单元 32, 用于接收所述用户设备发送的分组数据网络重新连接请求。 选择单元 33 , 用于选择所述第二 PLMN的锚定网关。
连接单元 34, 用于通过所述选择的锚定网关将所述用户设备连接至所述 分组数据网络。
当用户设备在不同的运营商之间移动时, 即从一个 PLMN漫游至另一个 PLMN, 发送单元 31 需要向用户设备发送分组数据网络连接释放请求, 该请 求携带重新连接指示, 否则, 用户设备移动后, 通过原有的锚定网关可能无法 连接至分组数据网络, 影响用户设备的 VoLTE或 VoHSPA语音业务。 用户设 备接收到分组数据网络连接释放请求后, 会向接收单元 32发送分组数据网络 重新连接请求。 接收单元 32接收到用户设备发送的分组数据网络重新连接请 求后, 选择单元 33选择漫游到的 PLMN的锚定网关, 连接单元 34通过该选 择的锚定网关将用户设备连接至分组数据网络,从而使得用户设备能顺利进行 其 VoLTE或 VoHSPA语音业务。
以 MME控制的 VoLTE语音业务为例, UE从一个 PLMN的覆盖区漫游 至另外一个 PLMN的覆盖区后, UE当前注册的 MME判断漫游接入的 UE是 否存在 IMS PDN连接资源, 若存在 IMS PDN连接资源且当前 PLMN支持该 漫游用户的 VoLTE业务,则 MME在发起 IMS PDN连接删除请求消息中指示 UE重建该 IMS PDN连接, UE重建此 IMS PDN连接过程中, MME为该漫游 用户选择本地 PGW服务 UE。 具体操作如下:
1、 UE在一个 PLMN网络附着, 并创建了语音 PDN连接, 语音 PDN连 接的锚定网关为该 PLMN1的 PGW。
2、UE由 PLMN1漫游至 PLMN2, MME为 UE选择本地 PLMN的 SGW2。 3、 UE漫游至一个新的 PLMN后, MME判断 UE从 PLMN1漫游到 PLMN2 网络, 若 UE当前存在 IMS PDN连接且 PLMN2支持该漫游用户的 VoLTE业 务, MME释放该 UE的 IMS PDN连接, 并指示 UE重新创建 IMS PDN连接。
4、 MME收到该 UE的语音 PDN连接建立请求后, 选择和当前 PLMN的
PGW。
再以 SGSN控制的 VoLTE语音业务为例, UE从一个 PLMN的覆盖区漫 游至另外一个 PLMN的覆盖区后, UE当前注册的 SGSN判断漫游接入的 UE 是否存在 IMS PDP资源,若存在 IMS PDP连接资源且当前 PLMN网络支持该 漫游用户的 VoLTE业务, 则 SGSN在发起 IMS PDP删除请求消息中指示 UE 重建该 IMS PDP连接, UE重建此 IMS PDP连接过程中, SGSN为该漫游用 户选择本地 GGSN服务 UE。
根据本发明实施例提供的一种与分组数据网络建立连接的装置,可以使用 户设备在不同公共陆地移动网络间发生漫游时, 能顺利进行语音业务,提高用 户的语音业务体验。
图 5 为本发明一种与分组数据网络建立连接的设备的一个实施例的结构 示意图。 如图 5所示, 该设备 4000包括:
输入装置 41、输出装置 42、存储器 443和处理器 44(监测设备中的处理器 44的数量可以一个或多个, 图 5中以一个处理器为例)。 在本发明的一些实施 例中, 输入装置 41、 输出装置 42、 存储器 443和处理器 44可通过总线或其它 方式连接, 其中, 图 5中以通过总线连接为例。
其中, 存储器 33中存储一组程序代码, 且处理器 44用于调用存储器 33 中存储的程序代码, 用于执行以下操作:
当检测到用户设备的位置发生变化时,判断所述用户设备连接至分组数据 网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致;
当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。 在本发明的一些实施例中, 处理器 44执行所述判断所述用户设备连接至 分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一 致的步骤, 包括:
根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述 锚定网关所服务的区域与所述数据转发网关所服务的区域是否一致。
在本发明的一些实施例中, 处理器 44执行所述判断所述用户设备连接至 分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一 致的步骤, 包括:
根据本地锚定网关列表,判断所述锚定网关是否在所述本地锚定网关列表 中。 在本发明的一些实施例中, 处理器 44执行所述当所述判断所述用户设备 连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域 不一致的步骤之后,以及执行所述向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求的步骤之前, 还执行如下步骤:
判断所述用户设备当前是否具有语音业务;
若判断的结果为是, 则检测所述用户设备的当前语音的承载是否释放完 成。
所述处理器执行所述当所述判断的结果为否时,则向所述用户设备发送携 带重新连接指示的分组数据网络连接释放请求的步骤, 包括:
若检测到所述用户设备的当前语音的承载释放完成后,向所述用户设备发 送所述携带重新连接指示的分组数据网络连接释放请求。
在本发明一些实施例中, 所述数据转发网关为服务网关 SGW, 对应的所 述锚定网关为分组数据网络网关 PGW; 或所述数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关为 GGSN。
根据本发明实施例提供的一种与分组数据网络建立连接的设备,可以避免 信令流和和语音流的迂回, 提高用户的语音业务体验。
图 6 为本发明一种与分组数据网络建立连接的设备的另一个实施例的结 构示意图。 如图 6所示, 该设备 5000包括:
输入装置 51、 输出装置 52、 存储器 53和处理器 54(监测设备中的处理器 54的数量可以一个或多个, 图 6中以一个处理器为例)。 在本发明的一些实施 例中, 输入装置 51、 输出装置 52、 存储器 53和处理器 54可通过总线或其它 方式连接, 其中, 图 6中以通过总线连接为例。
其中, 存储器 53中存储一组程序代码, 且处理器 54用于调用存储器 53 中存储的程序代码, 用于执行以下操作:
当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。 在一些可行的实施方式中,锚定网关为分组数据网络网关 PGW或 GGSN。 根据本发明实施例提供的一种与分组数据网络建立连接的设备,可以使用 户设备在不同公共陆地移动网络间发生漫游时, 能顺利进行语音业务,提高用 户的语音业务体验。
图 7 为本发明一种与分组数据网络建立连接的方法的一个实施例的流程 图。 如图 7所示, 该方法包括以下步骤:
步骤 S101 , 当检测到用户设备的位置发生变化时, 判断所述用户设备连 接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是 否一致; 若是, 则转至步骤 S106; 否则, 转至步骤 S102。
当用户设备的位置发生变化,例如从一个区域的覆盖区移动到另一个区域 的覆盖区时,判断该用户设备连接至分组数据网络的锚定网关所服务的区域与 数据转发网关所服务的区域是否一致,如果不一致,在用户设备发起语音业务 时, 将发生现有技术中的信令流和语音流的迂回, 影响用户的语音业务体验; 如果一致, 则继续与分组数据网络的连接。
判断锚定网关所服务的区域与数据转发网关所服务的区域是否一致,可以 比较锚定网关和数据转发网关的主机名称是否一致,如果一致, 则两者所服务 的区域也一致; 也可以通过查询本地存储的锚定网关列表,如果当前连接至分 组数据网络的锚定网关不在该本地锚定网关列表中,即认为锚定网关所服务的 区域与数据转发网关所服务的区域不一致,否则认为两者所服务的区域是一致 的。
步骤 S102, 向所述用户设备发送携带重新连接指示的分组数据网络连接 释放请求。
当判断的结果为该用户设备连接至分组数据网络的锚定网关所服务的区 域与数据转发网关所服务的区域不一致时,则向用户设备发送分组数据网络连 接释放请求, 该释放请求中携带重新连接指示。
步骤 S103 , 接收所述用户设备发送的分组数据网络重新连接请求。
接收用户设备重新发送的分组数据网络重新连接请求。
步骤 S104, 选择与所述数据转发网关所服务的区域一致的锚定网关。 步骤 S105 , 通过与所述选择的锚定网关将所述用户设备连接至所述分组 数据网络。 步骤 S106, 继续与所述分组数据网络的连接。
当接收到用户设备发送的分组数据网络重新连接请求时, 这时,选择通过 与数据转发网关所服务的区域一致的锚定网关将该用户设备连接至该分组数 据网络, 这样可以避免信令流和和语音流的迂回, 提高用户的语音业务体验。
根据本发明实施例提供的一种与分组数据网络建立连接的方法,可以避免 信令流和和语音流的迂回, 提高用户的语音业务体验。
图 8 为本发明一种与分组数据网络建立连接的方法的另一个实施例的流 程图。 如图 8所示, 该方法包括以下步骤:
步骤 S201 , 当检测到用户设备的位置发生变化时, 判断所述用户设备连 接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是 否一致; 若是, 则转至步骤 S208; 否则, 转至步骤 S202。
在本发明实施例中, 在 VoLTE业务中, 装置 2000可以是 MME, 相应的 数据转发网关可以是 SGW, 锚定网关可以是 PGW; 在 VoHSPA业务中, 装置 2000可以是 S4 SGSN或 Gn/Gp SGSN, 对应 S4 SGSN, 数据转发网关可以是 SGW,锚定网关可以是 PGW,对应 Gn/Gp SGSN,数据转发网关可以是 Gn/Gp SGSN, 锚定网关可以是 GGSN。
例如, UE在 Areal的 LTE网络附着, 并与分组数据网络例如 IMS Core 建立了连接, 该连接通过的锚定网关为 Areal的 PGW, UE现在由 Areal移动 至 Area2, MME会根据 UE实际接入的跟踪区选择 SGW, MME比较当前 UE 的 SGW主机名称和当前 PGW主机名称, 若主机名称一致, 则 SGW和 PGW 所服务的区域相同,则 MME无需做该 UE的 PGW的重选操作。例如 SGW主 机名称为: topon.s5.gw32.california.west.example.com , PGW 的主机名称为 topon.S5.gw31.california.west.example.com; 这两个网关就属于同一个区域 california.west.example.com。
MME判断 SGW和 PGW是否属于同一个区域,除了可以根据上面所述的 主机名称所在的区域来判断,还可以通过 MME上配置本地 PGW列表来判断, 即所有不在本地配置 PGW列表范围内的 PGW都认为不是当前区域的 PGW。
步骤 S202, 判断所述用户设备当前是否具有语音业务; 若是, 则转至步 骤 S203; 否则, 转至步骤 S204。
步骤 S203, 检测到所述用户设备的当前语音的承载释放完成。 步骤 S204, 向所述用户设备发送携带重新连接指示的分组数据网络连接 释放请求。
根据上面的举例, 若 SGW和 PGW所在区域不同, MME再判断当前 UE 是否有语音业务(即 MME是否存在语音 PDN连接的 QCI 1承载 ), 若 UE有 对应 VoLTE语音业务, 则 MME等该 UE的语音业务承载释放完成后, MME 发起语音 PDN连接释放, 释放请求中携带重新连接指示。 若 UE 没有对应 VoLTE语音业务, 则 MME直接发起语音 PDN连接释放并触发 UE重建此语 音 PDN连接。
步骤 S205 , 接收所述用户设备发送的分组数据网络重新连接请求。
根据上面的举例, UE收到 MME发送的语音 PDN连接释放请求后,便发 起语音 PDN连接的重新连接请求。
步骤 S206, 选择与所述数据转发网关所服务的区域一致的锚定网关。 步骤 S207, 通过所述选择的锚定网关将所述用户设备连接至所述分组数 据网络。
步骤 S208, 继续与所述分组数据网络的连接。
根据上面的举例, MME收到该 UE的语音 PDN连接的重新连接请求后, 选择和当前 SGW同一个区域的 PGW服务该 UE。
对于由 S4 SGSN控制的 VoHSPA业务, 其流程如下:
1、 UE在 Area 1的 LTE网络附着,并创建了语音分组数据协议 (Packet Data Protocol, PDP)连接, 语音 PDP连接的锚定网关为 Area 1的 PGW。
2、 UE由 Area 1移动至 Area 2, SGSN会根据 UE实际接入的跟踪区选择 SGW, SGSN比较当前 UE的 SGW主机名称和当前 PGW主机名称, 若所在 区域相同, 则 SGSN无需做该 UE的 PGW的重选操作; 例如 SGW主机名称 为 : topon.s5.gw32.california.west.example.com , PGW ό 主机名 称为 topon.S5.gw31.california.west.example.com; 这两个网关就属于同一个区域 california.west.example.com。
3、 若 SGW和 PGW所在区域不同, SGSN再判断当前 UE是否有语音业 务(即, SGSN是否存在语音业务对应的二次 PDP ), 若 UE有对应 VoHSPA 语音业务, 则 SGSN等该 UE的语音业务 PDP释放完成后, SGSN发起语音 PDP释放, 释放请求中携带重新连接指示。 UE收到 SGSN发送的语音 PDP 释放请求后, 便发起语音 PDP的重新连接请求; 若 UE没有对应 VoHSPA语 音业务,则 SGSN直接发起语音 PDP连接释放并触发 UE重新发起此语音 PDP 连接。
SGSN判断 SGW和 PGW是否属于同一个区域, 除了可以根据上面所述 的主机名所在的区域来判断;还可以通过 SGSN上配置本地 PGW列表来判断, 即所有不在本地配置 PGW列表范围内的 PGW都认为不是当前区域的 PGW。
4、 SGSN收到该 UE的语音 PDP连接的重新连接请求后,选择和当前 SGW 同一个区域的 PGW月良务该 UE。
对于由 Gn/Gp SGSN控制的 VoHSPA业务, 其流程为:
UE从一个 Area l的覆盖区移动至 Area 2的覆盖区后, Gn/Gp SGSN判断 当前选择的 SGSN和 GGSN是否属于同一个区域, 对于两者不在同一个区域 且当前没有 VoHSPA语音业务的 UE,则 SGSN发起该 UE的语音 PDP的删除 并触发 UE重建语音 PDP, 在重建语音 PDP过程中, SGSN选择和 SGSN相 同区域的 GGSN服务 UE。上述处理完成后, UE移动至 Area 2后便注册在 Area 2的 GGSN, 由 Area 2的 GGSN服务 UE。
和 S4 SGSN场景的不同点在于: Gn/Gp SGSN无法通过主机名判断 SGSN 和 GGSN是否属于同一个区域, 只能通过 Gn/Gp SGSN上配置的本地 GGSN 列表判断 GGSN是否在本地列表中。
根据本发明实施例提供的一种与分组数据网络建立连接的方法,通过使得 锚定网关和数据转发网关所服务的区域一致, 可以避免信令流和语音流的迂 回, 提高用户的语音业务体验; 也可以保证语音业务流量本地化, 使语音业务 呼叫时延降低, 提高语音业务建立成功率。
图 9 为本发明一种与分组数据网络建立连接的方法的又一个实施例的流 程图。 如图 9所示, 该方法包括以下步骤:
步骤 S301 , 当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第 二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释 放请求。
步骤 S302, 接收所述用户设备发送的分组数据网络重新连接请求。
步骤 S303 , 选择所述第二 PLMN的锚定网关。
步骤 S304, 通过所述选择的锚定网关将所述用户设备连接至所述分组数 据网络。
不同的 PLMN由不同的运营商管理, 当用户设备在不同的运营商之间移 动时, 即从一个 PLMN漫游至另一个 PLMN, 需要向用户设备发送分组数据 网络连接释放请求, 该请求携带重新连接指示, 否则, 用户设备移动后, 通过 原有的锚定网关可能无法连接至分组数据网络, 影响用户设备的 VoLTE 或 VoHSPA语音业务。 用户设备接收到分组数据网络连接释放请求后, 会发送分 组数据网络重新连接请求。接收到用户设备发送的分组数据网络重新连接请求 后, 通过漫游到的 PLMN的锚定网关将用户设备连接至分组数据网络, 从而 使得用户设备能顺利进行其 VoLTE或 VoHSPA语音业务。
以 MME控制的 VoLTE语音业务为例, UE从一个 PLMN的覆盖区漫游至 另外一个 PLMN的覆盖区后, UE当前注册的 MME判断漫游接入的 UE是否 存在 IMS PDN连接资源, 若存在 IMS PDN连接资源且当前 PLMN支持该漫 游用户的 VoLTE业务, 则 MME在发起 IMS PDN连接删除请求消息中指示 UE重建该 IMS PDN连接, UE重建此 IMS PDN连接过程中, MME为该漫游 用户选择本地 PGW服务 UE。 具体操作如下:
1、 UE在一个 PLMN网络附着, 并创建了语音 PDN连接, 语音 PDN连 接的锚定网关为该 PLMN1的 PGW。
2、 UE由 PLMN1漫游至 PLMN2, MME为 UE选择本地 PLMN的 SGW2。 3、 UE漫游至一个新的 PLMN后, MME判断 UE从 PLMN1漫游到 PLMN2 网络, 若 UE当前存在 IMS PDN连接且 PLMN2支持该漫游用户的 VoLTE业 务, MME释放该 UE的 IMS PDN连接, 并指示 UE重新创建 IMS PDN连接。
4、 MME收到该 UE的语音 PDN连接建立请求后, 选择和当前 PLMN的 PGW。
再以 SGSN控制的 VoLTE语音业务为例, UE从一个 PLMN的覆盖区漫 游至另外一个 PLMN的覆盖区后, UE当前注册的 SGSN判断漫游接入的 UE 是否存在 IMS PDP资源,若存在 IMS PDP连接资源且当前 PLMN网络支持该 漫游用户的 VoLTE业务, 则 SGSN在发起 IMS PDP删除请求消息中指示 UE 重建该 IMS PDP连接, UE重建此 IMS PDP连接过程中, SGSN为该漫游用 户选择本地 GGSN服务 UE。
根据本发明实施例提供的一种与分组数据网络建立连接的方法,可以使用 户设备在不同公共陆地移动网络间发生漫游时, 能顺利进行语音业务,提高用 户的语音业务体验。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的设备和方法, 可 以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性的, 例 如, 所述模块的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划 分方式, 例如多个模块或组件可以结合或者可以集成到另一个设备中, 或一些 特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间的耦合或直接耦 合或通信连接可以是通过一些通信接口, 装置或模块的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的,作为 也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或者全 部, 模块来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能模块可以集成在一个处理模块中, 也可以是各个模块单独物理存在,也可以两个或两个以上模块集成在一个模块 中。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到各实施 方式可借助软件加必需的通用硬件平台的方式来实现, 当然也可以通过硬件。 基于这样的理解,上述技术方案本质上或者说对现有技术做出贡献的部分可以 以软件设备的形式体现出来,该计算机软件设备可以存储在计算机可读存储介 质中, 如 ROM/RAM、 磁碟、 光盘等, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网络设备等)执行各个实施例或者实施例 的某些部分所述的方法。
以上所述的实施方式, 并不构成对该技术方案保护范围的限定。任何在上 述实施方式的精神和原则之内所作的修改、等同替换和改进等, 均应包含在该 技术方案的保护范围之内。

Claims

权 利 要 求
1、 一种与分组数据网络建立连接的装置, 其特征在于, 包括:
第一判断单元, 用于当检测到用户设备的位置发生变化时, 判断所述用户 设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的 区域是否一致;
发送单元, 用于当所述判断的结果为否时, 则向所述用户设备发送携带重 新连接指示的分组数据网络连接释放请求;
接收单元, 用于接收所述用户设备发送的分组数据网络重新连接请求; 选择单元, 用于选择与所述数据转发网关所服务的区域一致的锚定网关; 连接单元,用于通过所述选择的锚定网关将所述用户设备连接至所述分组 数据网络。
2、 如权利要求 1所述的装置, 其特征在于, 所述第一判断单元具体用于 根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述锚定 网关所服务的区域与所述数据转发网关所服务的区域是否一致。
3、 如权利要求 1所述的装置, 其特征在于, 所述第一判断单元具体用于 根据本地锚定网关列表, 判断所述锚定网关是否在所述本地锚定网关列表中。
4、 如权利要求 1-3任意一项所述的装置, 其特征在于, 还包括: 第二判断单元, 用于判断所述用户设备当前是否具有语音业务; 检测单元, 用于当所述第二判断单元的结果为是时, 检测所述用户设备的 当前语音的承载是否释放完成;
所述发送单元具体用于若所述检测单元检测到所述用户设备的当前语音 的承栽释放完成后,向所述用户设备发送所述携带重新连接指示的分组数据网 络连接释放请求。
5、 如权利要求 1-4任意一项所述的装置, 其特征在于, 所述数据转发网
替换页(细则第 26条) 关为服务网关 SGW, 对应的所述錨定网关为分组数据网络网关 PGW; 或所述 数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关为 GGSN。
6、 一种与分组数据网络建立连接的装置, 其特征在于, 包括: 发送单元, 用于当检测到用户设备由第一公共陆地移动网络 PLMN漫游 至第二 PLMN 时, 向所述用户设备发送携带重新连接指示的分组数据网络连 接释放请求;
接收单元, 用于接收所述用户设备发送的分组数据网络重新连接请求; 选择单元, 用于选择所述第二 PLMN的锚定网关;
连接单元,用于通过所述选择的锚定网关将所述用户设备连接至所述分组 数据网络。
7、 如权利要求 6所述的装置, 其特征在于, 所述锚定网关为分组数据网 络网关 PGW或 GGSN。
8、 一种与分组数据网络建立连接的设备, 其特征在于, 包括输入装置、 输出装置、 存储器和处理器;
其中, 所述处理器用于执行如下步骤:
当检测到用户设备的位置发生变化时,判断所述用户设备连接至分组数据 网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致;
当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择与所述数据转发网关所服务的区域一致的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
9、 如权利要求 8所述的设备, 其特征在于, 所述处理器执行所述判断所 述用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所 服务的区域是否一致的步骤, 包括:
根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述 替换页 (细则第 26条) 锚定网关所服务的区域与所述数据转发网关所服务的区域是否一致。
10、 如权利要求 8所述的设备, 其特征在于, 所述处理器执行所述判断所 述用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网关所 服务的区域是否一致的步骤, 包括:
根据本地锚定网关列表,判断所述锚定网关是否在所述本地锚定网关列表 中。
11、 如权利要求 8-10任意一项所述的设备, 其特征在于, 所述处理器执 行所述当所述判断所述用户设备连接至分组数据网络的锚定网关所服务的区 域与数据转发网关所服务的区域不一致的步骤之后,以及执行所述向所述用户 设备发送携带重新连接指示的分组数据网络连接释放请求的步骤之前,还执行 如下步骤:
判断所述用户设备当前是否具有语音业务;
若判断的结果为是, 则检测所述用户设备的当前语音的承栽是否释放完 成;
所述处理器执行所述当所述判断的结果为否时,则向所述用户设备发送携 带重新连接指示的分组数据网络连接释放请求的步骤, 包括:
若检测到所述用户设备的当前语音的承栽释放完成后,向所述用户设备发 送所述携带重新连接指示的分组数据网络连接释放请求。
12、 如权利要求 8-11 任意一项所述的设备, 其特征在于, 所述数据转发 网关为服务网关 SGW, 对应的所述锚定网关为分组数据网络网关 PGW; 或所 述数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关为 GGSN。
13、 一种与分组数据网络建立连接的设备, 其特征在于, 包括输入装置、 输出装置、 存储器和处理器;
其中, 所述处理器用于执行如下步骤:
当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求; 替换页(细则第 26条) 接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
14、 如权利要求 13所述的设备, 其特征在于, 所述锚定网关为分组数据 网络网关 PGW或 GGSN。
15、 一种与分组数据网络建立连接的方法, 其特征在于, 包括: 当检测到用户设备的位置发生变化时,判断所述用户设备连接至分组数据 网络的锚定网关所服务的区域与数据转发网关所服务的区域是否一致;
当所述判断的结果为否时,则向所述用户设备发送携带重新连接指示的分 组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择与所述数据转发网关所服务的区域一致的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
16、 如权利要求 15所述的方法, 其特征在于, 所述判断所述用户设备连 接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是 否一致, 包括:
根据所述锚定网关和所述数据转发网关的主机名称的比较结果,判断所述
:一致。
17、 如权利要求 15所述的方法, 其特征在于, 所述判断所述用户设备连 接至分组数据网络的锚定网关所服务的区域与数据转发网关所服务的区域是 否一致, 包括:
根据本地锚定网关列表,判断所述锚定网关是否在所述本地锚定网关列表 中。
18、 如权利要求 15-17任意一项所述的方法, 其特征在于, 所述当所述判 断所述用户设备连接至分组数据网络的锚定网关所服务的区域与数据转发网
替换页 (细则第 26条) 关所服务的区域不一致之后,以及所述向所述用户设备发送携带重新连接指示 的分组数据网络连接释放请求之前, 还包括:
判断所述用户设备当前是否具有语音业务;
若判断的结果为是, 则检测所述用户设备的当前语音的承载是否释放完 成;
所述当所述判断的结杲为否时,则向所述用户设备发送携带重新连接指示 的分组数据网络连接释放请求, 包括:
若检测到所述用户设备的当前语音的承栽释放完成,则向所述用户设备发 送所述携带重新连接指示的分组数据网络连接释放请求。
19、 如权利要求 15-18任意一项所述的方法, 其特征在于, 所述数据转发 网关为服务网关 SGW, 对应的所述锚定网关为分组数据网络网关 PGW; 或所 述数据转发网关为 Gn/Gp SGSN, 对应的所述锚定网关为 GGSN。
20、 一种与分组数据网络建立连接的方法, 其特征在于, 包括: 当检测到用户设备由第一公共陆地移动网络 PLMN漫游至第二 PLMN时, 向所述用户设备发送携带重新连接指示的分组数据网络连接释放请求;
接收所述用户设备发送的分组数据网络重新连接请求;
选择所述第二 PLMN的锚定网关;
通过所述选择的锚定网关将所述用户设备连接至所述分组数据网络。
21、 如权利要求 20所述的方法, 其特征在于, 所述锚定网关为分组数据 网络网关 PGW或 GGSN。
替换页 (细则第 26条)
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