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WO2010075729A1 - Procédé et système pour contrôler un chemin de transmission de données, élément de réseau de gestion de mobilité et terminal - Google Patents

Procédé et système pour contrôler un chemin de transmission de données, élément de réseau de gestion de mobilité et terminal Download PDF

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Publication number
WO2010075729A1
WO2010075729A1 PCT/CN2009/075439 CN2009075439W WO2010075729A1 WO 2010075729 A1 WO2010075729 A1 WO 2010075729A1 CN 2009075439 W CN2009075439 W CN 2009075439W WO 2010075729 A1 WO2010075729 A1 WO 2010075729A1
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WO
WIPO (PCT)
Prior art keywords
network
terminal
data transmission
transmission path
capability information
Prior art date
Application number
PCT/CN2009/075439
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English (en)
Chinese (zh)
Inventor
帅扬来
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
Publication of WO2010075729A1 publication Critical patent/WO2010075729A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1446—Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • TECHNICAL FIELD Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission path control method and system, a mobility management network element, and a terminal.
  • the convergence of mobile communication networks and broadband wireless access technologies is the evolution of telecommunication networks.
  • the network network measurement report of the terminal determines the target network for the terminal. After that, the terminal directly switches its own radio frequency to the target network.
  • the network anchor completes the bearer establishment of the terminal, the network anchors switch the corresponding user plane data transmission path from the source network to the target network.
  • An aspect of the present invention provides a data transmission path control method and system, a mobility management network element, and a terminal, which are used to reduce the probability of terminal data loss during an inter-network handover process.
  • Another aspect of the present invention provides a method for controlling a data transmission path, including: acquiring wireless access capability information of a terminal;
  • the embodiment of the invention further provides a mobility management network element, including:
  • An obtaining module configured to acquire wireless access capability information of the terminal
  • a control module configured to perform, according to the wireless access capability information, cross-network handover control of a data transmission path corresponding to the terminal.
  • the embodiment of the invention further provides a terminal, including:
  • a radio access capability information sending module configured to send, by the network side, its own radio access capability information
  • a receiving module configured to receive data by using a data transmission path determined by the network side according to the wireless access capability information.
  • the embodiment of the present invention further provides a control system for a data transmission path, including a terminal and a network side device, where the network side device is configured to perform a data transmission path corresponding to the terminal according to the wireless access capability information. Inter-network switching control.
  • the terminal reports its own radio access capability information to the network side, which is beneficial to the network side according to the access capability of the terminal.
  • the inter-network handover control of the user plane data transmission path is performed for the terminal, so that the terminal with different access capabilities adopts a control policy matching the terminal access capability in the inter-network handover process to ensure that the terminal can correctly receive the inter-network handover process.
  • the network anchor sends the data, thereby reducing the probability of data loss and jitter of data transmission.
  • FIG. 1 is a flowchart of a method for controlling a data transmission path according to a first embodiment of the present invention
  • FIG. 2 is a signaling interaction diagram of a method for controlling a data transmission path according to a second embodiment of the present invention
  • FIG. 3 is a third embodiment of the present invention
  • 3b is a schematic structural diagram of a trusted non-3GPP network according to an embodiment of the present invention.
  • 3c is a schematic structural diagram of a non-trusted non-3GPP network according to an embodiment of the present invention.
  • 3d is a schematic structural diagram of a 3GPP network according to an embodiment of the present invention.
  • FIG. 4 is a signaling interaction diagram of a data transmission path control method according to a fourth embodiment of the present invention
  • FIG. 5 is a signaling interaction diagram of a data transmission path control method according to a fifth embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a mobility management network element according to a seventh embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a terminal according to an eighth embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a control system of a data transmission path according to a ninth embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art are not All other embodiments obtained under the premise of creative labor are within the scope of the invention.
  • FIG. 1 is a flowchart of a method for controlling a data transmission path according to a first embodiment of the present invention. As shown in FIG. 1, this embodiment includes:
  • Step 11 Obtain wireless access capability information of the terminal.
  • the terminal radio access capability information (UE Radio Capability) is used to indicate that the terminal establishes an air interface connection with the network side base station when the terminal accesses a certain radio access technology network, for example, the universal access terminal evolves.
  • the parameters in the terminal radio access capability information include: Packet Data Convergence Protocol (PDCP) parameters and physical layer parameters. Radio frequency (RF) parameters, measurement parameters, and supported Inter Radio Access Technology (Inter-RAT) parameters.
  • the Inter-RAT parameters include: The wireless access capability supported by the terminal is Single Rx/Tx mode, Dual Rx/Single Tx mode, or Dual RX/Dual Rx/ Tx) mode, etc.
  • the radio access capability information of the terminal may be reported to the network side device, for example, the mobility management network element, in the initial attach procedure.
  • the mobility management network element may send the obtained radio access capability information of the terminal to the eNodeB (the eNB for short), so that the eNB needs to use the radio access capability information of the terminal in the process of the terminal being activated from the idle state.
  • the S1-AP (S1 application layer) message can be obtained from the mobility management network element, thereby reducing the waste of the air interface resources caused by the eNB acquiring the terminal radio access capability information from the air interface, which is beneficial to saving air interface resources.
  • the wireless access capability information of the terminal may also be sent to the network side device in the Handover Attach Procedure.
  • the wireless access capability information of the terminal may include: a single-issue mode or a dual-issue mode.
  • the single shot mode can include: Single Rx/Tx mode or Double Rx/ Single Tx) mode, etc.
  • Dual-issue mode can include: Dual dual-issue (Dua l Rx/Tx) mode.
  • the radio access capability information includes a dual-receiver dual-issue terminal, that is, a terminal that supports dual-receiving dual-issue, and the terminal supports RF for different access technologies, and multiple RFs can receive data and transmit data at the same time. For example: While transmitting data and receiving data via the first network, the terminal also supports transmitting data and receiving data via the second network.
  • the radio access capability information includes a terminal in a dual-receive single-issue mode, that is, a terminal that supports dual-acquisition, and the terminal supports RF for different access technologies, and multiple RFs can receive data at the same time, but only one RF can be sent.
  • the function of the data For example: while the terminal sends data and receives data via the first network, it also supports receiving data via the second network, but does not support sending data via the second network; in this case, the data received by the terminal via the second network is usually not A broadcast message that the terminal needs to send the feedback information to the second network, such as: a system notification message, an advertisement message, etc., for the second network user plane data that requires the terminal to send feedback, because the terminal does not support the second network at this time.
  • the second network base station will not detect the uplink signal of the terminal, after a certain time, the second network base station will consider that the terminal is not in the coverage, and stop transmitting the downlink data, thereby causing the terminal The second network user plane data cannot be received correctly.
  • the radio access capability information includes a terminal in a single-receive single-issue mode, that is, a terminal that supports single-acquisition-issuing, and the terminal supports RF for different access technologies, and only one RF can receive data and send data at the same time. For example: While transmitting data and receiving data via the first network, the terminal does not support transmitting data and receiving data via the second network.
  • Step 1 3 Perform inter-network handover control of the data transmission path corresponding to the terminal according to the wireless access capability information.
  • the terminal needs to perform inter-network handover, that is, switch from the source network to the target network
  • the terminal switches its own radio frequency from the source network to the target network.
  • the target network side device may perform switching control of the corresponding user plane data transmission path for the inter-network handover of the terminal according to the radio access capability information of the terminal.
  • the wireless access capability information of the terminal is a single-issue mode, such as a single-receive single-issue mode or a dual-receive single-issue mode
  • the user plane data transmission path corresponding to the terminal may be configured before the target network establishes a bearer for the terminal. The source network switches to the target network.
  • the user plane data transmission path corresponding to the terminal may be maintained in the source network before the target network establishes the bearer for the terminal, but After the target network establishes the bearer for the terminal, the user plane data transmission path corresponding to the terminal is switched from the source network to the target network; or, if the wireless access capability information of the terminal is in the dual-issue mode, for example: dual-receive dual-issue mode
  • the connection establishment process to the network anchor point may be initiated only after the target network completes the bearer establishment of the terminal, and then the network anchor point is instructed to switch the data transmission path corresponding to the terminal from the source network to the Target network.
  • the terminal does not support receiving data through the source network radio and receiving data through the source network radio, such as a terminal that supports single-acquisition, then when the target network establishes a bearer for the terminal, the terminals will Unable to receive the data sent by the network anchor, causing the terminal data to be lost.
  • the requirement to correctly receive the data sent by the network anchor point is: The terminal needs to support the ability to send a feedback message through the corresponding network radio that sends the data.
  • the access capability of the terminal supports receiving data through the target network radio, it can also receive data through the source network radio, but does not support sending data through the target network radio, and can also send data through the source network radio, that is, the terminal supports dual
  • the access mode of the incoming call then, in the process of establishing the bearer for the terminal in the target network, although the terminals can receive the data sent by the network anchor, the terminals do not support sending the feedback to the network anchor through the source network radio.
  • the source network base station will not detect the uplink signal of the terminal. After a certain time, the base station will consider that the terminal is not within the coverage and stop transmitting downlink data. As a result, the terminal cannot receive data correctly.
  • the terminal performs the inter-network handover of the user plane data transmission path according to the radio access capability information of the terminal, so that the terminals with different access capabilities are connected to the terminal in the inter-network handover process.
  • the control strategy of matching the capability ensures that the terminal can receive the data sent by the network anchor during the inter-network handover process, thereby reducing the probability of data loss and the jitter of data transmission.
  • the radio access capability information of the terminal is the single-receive single-issue mode or the dual-receive single-issue mode
  • the user-side data transmission path corresponding to the terminal may be switched from the source network to the target network before the target network establishes the bearer for the terminal.
  • the terminal can receive data of the network anchor point through the user plane data transmission path of the target network and send feedback to the network anchor point, thereby reducing data loss of the terminal and reducing jitteriness of data transmission.
  • FIG. 2 is a signaling interaction diagram of a method for controlling a data transmission path according to a second embodiment of the present invention.
  • the difference between this embodiment and the embodiment shown in FIG. 1 is that the technical solution of the embodiment of the present invention is described by taking an example of inter-network handover between heterogeneous evolution networks.
  • the source network in which the terminal is located is the source network of the embodiment of the present invention.
  • the target evolved network to which the terminal needs to be handed over is the target network of the embodiment of the present invention, and the source network and the target network have a common network anchor point.
  • this embodiment includes:
  • Step 21 The terminal accesses the source network through the source network mobility management network element and the network anchor, and the terminal can access the service through the source network.
  • Step 23 After determining that the target network is to be switched, the terminal sends an attach request (At tach Reques t) of the type to the target network mobility management network element, where the attach request carries the radio access capability information of the terminal, where
  • the wireless access capability information includes: single-shot mode or dual-issue mode.
  • the single-shot mode may include: a single-single-single (Single Rx/Tx) mode or a dual-single-single-single (Dua l Rx/Sing le Tx) mode; the dual-issue mode may include: Dua l Rx/Tx ) mode, etc.
  • Step 25 Initiating an access process of the terminal to the target network.
  • Step 27 The target network mobility management network element acquires the terminal according to the received attach request.
  • the radio access capability information is used to determine the access capability of the terminal, and the corresponding handover control policy is matched with the radio access capability information of the terminal: If the radio access capability information of the terminal is a single-issue mode, such as: In the send mode or the dual-issue mode, perform steps 219-223.
  • step 29-217 is performed, where step 29 and step 211 are optional steps, for example: if the target network mobility management The entity determines that the connection establishment to the network anchor point is not required to be initiated before the target network completes the bearer establishment of the terminal, and step 29 and step 211 need not be performed, and step 21 3-step 217 is directly executed.
  • Step 29 If the target network mobility management network element determines that the access capability of the current terminal is in the dual-received dual-issue mode, the first indication information is sent to the network anchor, where the first indication information is used to indicate that the network anchor point is not
  • the inter-network handover of the user plane data transmission path (User P ane Da ta Pa th ) is performed, that is, the user plane data transmission path of the terminal is maintained in the source network.
  • the target network mobility management network element may send a connection establishment request to the network anchor point, indicating that the network anchor point does not perform the user plane data transmission path.
  • the cross-network switching may be performed by the target network mobility management network element.
  • the target network mobility management network element may also carry the indication information in the connection establishment request, to indicate that the network anchor point does not perform the cross-network handover of the user plane data transmission path.
  • Step 211 The network anchor keeps the user plane data transmission path corresponding to the terminal in the source network according to the first indication information, and sends the first response information to the target network mobility management network element.
  • the network anchor sends data to the terminal through the user plane data transmission path of the source network.
  • the terminal can receive data from the network anchor through the source network radio and send feedback information to the network anchor.
  • the connection establishment response message may be sent to the target network mobility management network element, to notify the target network to move to step 21, due to the target network mobility.
  • the management network element determines that the access capability of the current terminal is supported.
  • the dual-transmission dual-issue mode is adopted, so the target network initiates the corresponding bearer establishment process of the terminal, and completes the bearer establishment corresponding to the terminal in the target network.
  • Step 215 After the target network completes the bearer establishment corresponding to the terminal, the target network mobility management network element sends the second indication information to the network anchor point, where the second indication information is used to indicate that the network anchor point performs the user plane corresponding to the terminal.
  • the cross-network switching of the data transmission path is to switch the user plane data transmission path corresponding to the terminal from the source network to the target network.
  • the target network mobility management network element may send a connection update request to the network anchor point, indicating that the network anchor point transmits the user plane data transmission path from the network
  • the source network may be switched to the target network, or the target network mobility management network element may further carry an indication cell in the connection update request, to indicate that the network anchor switches the user plane data transmission path from the source network to the target network.
  • Step 217 The network anchor, when receiving the second indication information, switches the user plane data transmission path corresponding to the terminal from the source network to the target network, and sends the second response information to the target network mobility management network element. Step 225 is performed.
  • the network anchor sends data to the terminal through the user plane data transmission path of the target network.
  • the terminal can receive data from the network anchor through the target network radio and send feedback information to the network anchor.
  • the connection update response message may be sent to the target network mobility management network element, to notify the target network that the mobility management network element has been corresponding to the terminal.
  • the user plane data transmission path is switched from the source network to the destination network.
  • Step 219 If the target network mobility management network element determines that the current terminal access capability is in the single-receive single-issue mode or the dual-receive single-issue mode, the third indication information is sent to the network anchor, where the third indication information is used. Instructing the network anchor to perform an inter-network handover of the user plane data transmission path (User P Lane Da ta Pa th ), that is, switching the user plane data transmission path of the terminal from the source network to the target network.
  • the target network mobility management network element may send a connection establishment request to the network anchor point, indicating that the network anchor point performs the user plane data transmission path.
  • the network mobility management network element may also carry an indication cell in the connection establishment request, and is used to indicate that the network anchor performs the cross-network handover of the user plane data transmission.
  • Step 221 The network anchor, when receiving the third indication information, switches the user plane data transmission path corresponding to the terminal from the source network to the target network, and sends the third response information to the target network mobility management network element.
  • the network anchor sends data to the terminal through the user plane data transmission path of the target network.
  • the terminal can receive data from the network anchor through the target network radio and send feedback information to the network anchor.
  • the connection response message may be sent to the target network mobility management network element, to notify the target network that the mobility management network element has been corresponding to the terminal.
  • the user plane data transmission path is switched from the source network to the destination network.
  • Step 223 The target network initiates a corresponding bearer establishment process, and completes bearer establishment corresponding to the terminal in the target network, and step 225 is performed.
  • Step 225 Complete the remaining cross-network handover process.
  • the remaining inter-network handover process may further include a process of deactivating the allocation of resources corresponding to the network anchor starting source network and the terminal.
  • the terminal reports its own radio access capability information to the target network mobility management network element in the handover attach procedure, and the target network mobility management network element performs the cross-network handover of the data transmission path according to the access capability of the terminal.
  • Control that is, when the data anchor point indicates that the target network completes the bearer establishment of the terminal, whether the user plane data transmission path corresponding to the terminal needs to be switched from the source network to the target network, so that the terminal supporting different access capabilities is in the process, Both can correctly receive the data sent by the network anchor, which significantly reduces the probability of the terminal losing data and the data. The jitter of the transmission.
  • the terminal may also send an attach request of the initial access to the mobility management network element in the initial access procedure of the network, and carry the wireless access of the terminal in the attach request. Capability information.
  • the mobility management network element may send the obtained radio access capability information of the terminal to the eNodeB (the eNB for short), so that the eNB needs to use the radio access capability information of the terminal in the process of the terminal being activated from the idle state.
  • the S1-AP (S1 application layer) message is obtained from the mobility management network element, thereby reducing the waste of air interface resources caused by the eNB acquiring the terminal radio access capability information from the air interface.
  • FIG. 3 is a signaling interaction diagram of a method for controlling a data transmission path according to a third embodiment of the present invention.
  • This embodiment differs from the embodiment shown in FIG. 2 of the present embodiment is that the present embodiment the target network is a third generation mobile communication embodiment Partnership Project (3 rd Generation Partnership Project, referred to as 3GPP) network, the source network is a non 3GPP (Non3GPP) Evolved The network, the network anchor point is a data packet network (referred to as PDN-GW), and the terminal supports the access capability as a single-receipt dual-issue or single-receipt single-issue mode.
  • 3GPP Third Generation Partnership Project
  • Non3GPP Non3GPP
  • PDN-GW data packet network
  • this embodiment includes:
  • Step 31 The terminal accesses the non-3GPP network through the non-3GPP network mobility management network element, and the terminal can access the service through the non-3GPP network.
  • the non-3GPP network may include: an untrusted non-3GPP (Nontrusted Non3GPP) evolved network and a trusted non-3GPP (Trusted Non3GPP) evolved network.
  • an untrusted non-3GPP Nontrusted Non3GPP
  • a trusted non-3GPP Trusted Non3GPP
  • FIG. 3b is a schematic diagram of a trusted non-3GPP network structure according to an embodiment of the present invention.
  • the terminal accesses the broadband access network
  • the broadband access network establishes a tunnel connection to the data gateway
  • the data gateway is connected to various service data networks, thereby establishing a terminal.
  • the data gateway is a large-scale mobility anchor of the terminal, and is an interface entity of the core network and the packet data network.
  • the user data is aggregated between the core network and the packet data network after being aggregated at the data gateway.
  • the data gateway can be responsible for implementing access policies, filtering packets for terminals, and assigning IP addresses to terminals.
  • the core control entity 1 may be an entity responsible for recording and managing information such as UE location information and authentication information.
  • Core Control entity 2 may be the entity responsible for authenticating and charging the UE.
  • a trusted non-3GPP (Nontrusted Non3GPP) evolved network such as: Code Division Multiple Access 2000 EV-DO (CDMA Division EV-DO), World Interoperability for Microwave Access (World Interoperability for Microwave Access, Referred to as WIMAX) network.
  • CDMA Division EV-DO Code Division Multiple Access 2000 EV-DO
  • WIMAX World Interoperability for Microwave Access
  • FIG. 3c is a schematic diagram of a non-trusted non-3GPP network structure according to an embodiment of the present invention.
  • the terminal in an untrusted non-3GPP network, the terminal establishes a tunnel connection to the border gateway through a specific broadband access network, the border gateway is connected to the data gateway through a tunnel, and the data gateway is connected to various packet data networks. Thereby establishing connectivity between the UE and the packet data network.
  • the border gateway is an entity at the core network boundary and is responsible for establishing a secure tunnel between the UE and the core network.
  • a data gateway can connect multiple border gateways, and each border gateway is responsible for establishing a secure tunnel for UEs in a local area.
  • IWLAN Interworking Wireless Local Area Network
  • the specific functional entities of the non-3GPP network mobility management network element are different for different non-3GPP networks.
  • the functional entity of the IWLAN network mobility management network element is an IWLAN packet data gateway (Evolved Packet Data Gateway, ePDG); corresponding to the WIMAX network, the functional entity of the WIMAX network mobility management network element is the WIMAX access service.
  • Step 33 After determining that the device is to be handed over to the 3GPP network, the terminal sends an attach request (Attach Request) of the type to the 3GPP network mobility management network element, where the attach request carries the wireless access capability information of the terminal, where the wireless connection Incoming capability information includes: Dual Rx/Single Tx mode or Single Rx/Tx mode.
  • FIG. 3 is a schematic structural diagram of a 3GPP network according to an embodiment of the present invention.
  • the terminal accesses the network through the access network, establishes a tunnel between the access network and the local service gateway under the control of the mobility management entity, and establishes a tunnel between the local service gateway and the data gateway, thereby establishing the UE and the grouping. Connectivity between data networks.
  • the mobility management entity may be responsible for managing terminal location information, access authentication, non-access stratum signaling, and signaling security;
  • the local service gateway is a small-range mobile data anchor of the terminal, and is a core network and an access network.
  • the interface entity is responsible for routing and forwarding user data.
  • the core control entity is an entity that records and manages user location information and authentication authorization information.
  • the 3GPP network may include a 3G Long Term Evolution (LTE) or Legacy 3GPP, such as a Universal Terrestrial Radio Access Network (UTRAN) or an enhanced GPRS radio access. Network (GPRS Enhancement Radio Acces s Network, referred to as GERAN) and so on.
  • LTE Long Term Evolution
  • GERAN enhanced GPRS radio access. Network
  • the specific functional entities of the 3GPP network mobility management network element are different for different 3GPP networks.
  • the functional entity of the LTE network mobility management network element is a Mobility Management Entity (referred to as the E-E); corresponding to the Legacy 3GPP (UTRAN/GERAN) network, Legacy 3GPP (UTRAN/ GERAN)
  • the functional entity of the network mobility management network element is a GPRS GPRS Suppering Node (SGSN).
  • SGSN GPRS GPRS Suppering Node
  • the terminal can report its own radio access capability information to the 3GPP mobility management network element in the initial access procedure, for example, when the terminal can report its own radio access capability information to the 3GPP mobility management network element, for example, Sending an attach request with an attach type as an initial access to the 3GPP mobility management network element, and carrying the radio access capability information of the terminal in the attach request.
  • Step 35 Initiate an access process of the terminal to the target network.
  • Step 37 The 3GPP network mobility management network element obtains the radio access capability information of the terminal according to the received attach request, and determines the access capability of the terminal, and adopts a corresponding handover control policy that matches the radio access capability information of the terminal. .
  • the radio access capability information of the terminal is a dual-receive single-issue mode or a single-receive single-issue mode
  • the 3GPP network mobility management network element determines that the user plane data needs to be transmitted during the bearer establishment process for the terminal in the 3GPP network. Switch to Target network.
  • Step 39 The 3GPP network mobility management network element sends a connection establishment request message to the PDN-GW via a serving gateway (Serv- ng Ga t eWay, S-GW for short), where the connection establishment request is used to indicate that the PDN-GW is the user of the terminal.
  • the face data transmission path is handed over from a non-3GPP network to a 3GPP network.
  • Step 31 When receiving the connection establishment request message, the PDN-GW switches the user plane data transmission path corresponding to the terminal from the non-3GPP network to the 3GPP network, and then sends a connection establishment response message to the 3GPP network mobility management network element.
  • the PDN-GW transmits data to the terminal through the user plane data transmission path of the 3GPP network.
  • the terminal can receive data from the PDN-GW through the 3GPP network radio.
  • Step 31 After the bearer establishment procedure of the 3GPP network initiating the terminal, after the bearer establishment corresponding to the terminal in the 3GPP network is completed, step 31 5 is performed.
  • Step 31 Complete the remaining cross-network switching process.
  • the remaining inter-network handover procedure may further include a process in which the PDN-GW initiates deactivation of allocated resources corresponding to the non-3GPP network and the terminal.
  • the 3GPP mobility management network element determines the handover control scheme of the user plane data path for the terminal according to the access capability of the terminal, that is, the 3GPP mobility management.
  • the network element acquiring the radio access capability information of the terminal includes supporting the single-issue mode, for example, supporting the dual-receive single-issue mode or supporting the single-receive single-issue mode, and the 3GPP mobility management network element indicates the PDN-GW before the 3GPP network bearer setup is completed.
  • the user plane data transmission path of the terminal is switched from the non-3GPP network to the 3GPP network, so that the single-receiving dual-issue terminal or the single-receive single-issue terminal receives data through the data transmission path of the user plane of the 3GPP network in the 3GPP network bearer establishment process.
  • FIG. 4 is a signaling interaction diagram of a method for controlling a data transmission path according to a fourth embodiment of the present invention.
  • the terminal supports the access capability as dual-received dual-issue.
  • this embodiment includes: Step 41: The terminal accesses the non-3GPP network through the non-3GPP network mobility management network element and the network anchor, and the terminal can perform service access through the non-3GPP network.
  • the non-3GPP network may include: an untrusted non-3GPP (Non- rusted Non3GPP) evolved network and a trusted non-3GPP (Trusted Non3GPP) evolved network.
  • Non-trusted non-3GPP (Non- rusted Non3GPP) evolved networks such as: IWALAN networks, etc.; trusted non-3GPP evolved networks such as: CDMA2000 EV-D0, WIMAX network, etc.
  • the specific functional entities of the non-3GPP network mobility management network element are different for different non-3GPP networks.
  • the functional entity of the IWLAN network mobility management network element is IWLAN ePDG
  • the functional entity of the WIMAX network mobility management network element is WIMAX ASN GW
  • CDMA2000 EV-DO network CDMA2000 EV-DO
  • the functional entity of the network mobility management network element is HRPD AN or HSGW.
  • Step 43 After determining to switch to the 3GPP network, the terminal sends an attach request (At tach Reques t) of the type to the 3GPP network mobility management network element, where the attach request carries the radio access capability information of the terminal, where The wireless access capability information includes: dual-receiving dual-issue (Dua l Rx/Tx) mode.
  • the 3GPP network may include LTE or Legacy 3GPP (UTRAN/GERAN) and the like.
  • the specific functional entities of the 3GPP network mobility management network element are different for different 3GPP networks.
  • the functional entity of the LTE network mobility management network element is ⁇ E
  • the functional entity of the Legacy 3GPP (UTRAN/GERAN) network mobility management network element is the SGSN.
  • the terminal can report its own radio access capability information to the 3GPP mobility management network element in the initial access procedure, for example, when the terminal can report its own radio access capability information to the 3GPP mobility management network element, for example, Sending an attach request with an attach type as an initial access to the 3GPP mobility management network element, and carrying the radio access capability information of the terminal in the attach request.
  • Step 45 Initiate an access process of the terminal to the target network.
  • Step 47 The 3GPP network mobility management network element acquires the terminal according to the received attach request.
  • the radio access capability information is used to judge the access capability of the terminal, and adopts a corresponding handover control policy that matches the radio access capability information of the terminal.
  • the 3GPP network mobility management network element may determine that the user plane data transmission path needs to be maintained in the non-3GPP network before the 3GPP network establishes the bearer for the terminal, but in the 3GPP. After the network establishes a bearer for the terminal, the user plane data transmission path is switched from the non-3GPP network to the 3GPP network.
  • the 3GPP network applies different bearer establishment modes based on different communication protocols that are followed between the 3GPP Network Service Gateway (Serving GateWay, S-GW for short) and the PDN-GW.
  • the first mode is that the bearer binding control function is on the Serving GW, and the Serving GW can obtain the information required for the establishment of the 3GPP bearer, such as: QoS rules.
  • step 49a and steps are performed. 411a (Steps 49a and 411a are not shown in FIG. 4).
  • Step 49a The 3GPP network mobility management network element sends a connection establishment request to the serving gateway S-GW.
  • Step 411a After receiving the connection establishment request, the S-GW sends a connection establishment response to the 3GPP network mobility management network element, and informs the mobility management network element terminal of the corresponding information in the connection establishment response information.
  • the second mode is that the bearer binding control function is on the PDN-GW, and only the PDN GW can obtain the information required for the establishment of the 3GPP bearer, for example, the QoS rule. In this case, after performing step 47, step 49b is performed. Step 411b.
  • Step 49b The 3GPP network mobility management network element sends a connection establishment request message to the PDN-GW via a Serving GateWay (S-GW), where the connection establishment request is used to instruct the PDN-GW not to transmit the user plane data of the terminal.
  • S-GW Serving GateWay
  • the path is switched from the non-3GPP network to the 3GPP network, that is, the user plane data transmission path of the terminal is maintained in the non-3GPP network.
  • Step 411b When receiving the connection establishment request message, the PDN-GW maintains the user plane data transmission path corresponding to the terminal in the non-3GPP network, and sends a connection establishment response message to the 3GPP network target network mobility management network element. At this time, the network anchor transmits data to the terminal through the user plane data transmission path of the non-3GPP network. Correspondingly, the terminal can receive data from the PDN-GW through the non-3GPP network radio.
  • Step 413 The 3GPP network initiates a corresponding bearer establishment process of the terminal.
  • Step 415 When the 3GPP network establishes a bearer corresponding to the terminal, the 3GPP network mobility management network element sends a connection establishment update message to the PDN-GW via the S-GW, where the connection setup update message is used to indicate that the PDN-GW performs the terminal with the terminal.
  • the cross-network handover of the corresponding user plane data transmission path, that is, the user plane data transmission path corresponding to the terminal is switched from the non-3GPP network to the 3GPP network.
  • Step 417 When receiving the connection establishment update message, the PDN-GW switches the user plane data transmission path corresponding to the terminal from the non-3GPP network to the 3GPP network, and sends a connection update response message to the 3GPP network mobility management network element.
  • the PDN-GW transmits data to the terminal through the user plane data transmission path of the 3GPP network.
  • the terminal can receive data from the PDN-GW through the 3GPP network radio.
  • Step 419 Complete the remaining cross-network handover process.
  • the remaining inter-network handover procedure may further include a process in which the PDN-GW initiates deactivation of allocated resources corresponding to the non-3GPP network and the terminal.
  • the 3GPP mobility management network element determines the handover control scheme of the user plane data path for the terminal according to the access capability of the terminal, that is, in the 3GPP mobility.
  • the management network element obtains the wireless access capability information of the terminal to support the dual-issue mode, for example, supports the dual-receive dual-issue mode, and after the 3GPP network bearer is established, instructs the PDN-GW to transmit the user plane data transmission path of the terminal from the non-3GPP network.
  • the dual-receiving dual-issue terminal receives data through the data transmission path of the non-3GPP network user plane during the 3GPP network bearer establishment process, and significantly reduces the jitter in the data transmission process.
  • FIG. 5 is a signaling interaction diagram of a method for controlling a data transmission path according to a fifth embodiment of the present invention.
  • the source network in this embodiment is a 3GPP network
  • the target network is a non-3GPP ( Non3GPP) evolved network
  • the network anchor point is a data packet network (referred to as PDN-GW)
  • the terminal Support access capability is dual-issue or single-issue single-issue mode.
  • this Examples include:
  • Step 51 The terminal accesses the 3GPP network through the 3GPP network mobility management network element, and the terminal can access the service through the 3GPP network.
  • the 3GPP network may include LTE or Legacy 3GPP, such as UTRAN or GERAN.
  • the specific functional entities of the 3GPP network mobility management network element are different for different 3GPP networks.
  • the functional entity of the LTE network mobility management network element is the MME;
  • the Legacy 3GPP, such as the UTRAN or the GERAN network the functional entity of the network mobility management network element is the SGSN.
  • Step 53 After determining that the device is to be switched to the non-3GPP network, the terminal sends an attach request (At tach Reques t) of the type to the non-3GPP network mobility management network element, where the attach request carries the radio access capability information of the terminal.
  • the wireless access capability information includes: Dua l Rx/S ing le Tx mode or Single single (S ing le Rx/Tx) mode.
  • the non-3GPP network may include: an untrusted non-3GPP (Non- rusted Non3GPP) evolved network and a trusted non-3GPP (Trusted Non3GPP) evolved network.
  • Non-trusted non-3GPP (Non- rusted Non3GPP) evolved networks such as: IWALAN networks, etc.; trusted non-3GPP evolved networks such as: CDMA2000 EV-D0, WIMAX network, etc.
  • the specific functional entities of the non-3GPP network mobility management network element are different for different non-3GPP networks.
  • the functional entity of the IWLAN network mobility management network element is IWLAN ePDG
  • the functional entity of the WIMAX network mobility management network element is WIMAX ASN GW
  • the functional entity of the network mobility management network element is HRPD AN or HSGW.
  • the terminal can report its own radio access capability information to the non-3GPP mobility management network element in the initial access procedure, except that the terminal can report its own radio access capability information to the non-3GPP mobility management network element in the handover attach procedure.
  • the attachment request with the attachment type being the initial access is sent to the non-3GPP mobility management network element, and the radio access capability information of the terminal is carried in the attachment request.
  • Step 55 Initiating an access process of the terminal to the target network.
  • Step 57 The non-3GPP network mobility management network element acquires the terminal according to the received attach request.
  • the wireless access capability information, and the access capability of the terminal is judged, and a corresponding handover control strategy matching the wireless access capability information of the terminal is adopted.
  • the non-3GPP network mobility management network element determines that the non-3GPP network needs to establish a bearer for the terminal, and the user plane data transmission path is switched to Target network.
  • Step 59 The non-3GPP network mobility management network element sends a connection establishment request message to the PDN-GW, where the connection establishment request is used to instruct the PDN-GW to switch the user plane data transmission path of the terminal from the non-3GPP network to the non-3GPP network.
  • Step 511 When receiving the connection establishment request message, the PDN-GW switches the user plane data transmission path corresponding to the terminal from the 3GPP network to the non-3GPP network, and then sends a connection establishment response message to the non-3GPP network mobility management network element.
  • the PDN-GW transmits data to the terminal through the user plane data transmission path of the non-3GPP network.
  • the terminal can receive data from the PDN-GW through the non-3GPP network radio.
  • Step 513 A non-3GPP network initiates a corresponding bearer establishment process, and after the bearer establishment corresponding to the terminal in the non-3GPP network is completed, step 515 is performed.
  • Step 515 Complete the remaining cross-network handover process.
  • the remaining inter-network handover procedure may further include a process in which the PDN-GW initiates deactivation of the allocated resources of the 3GPP network and the terminal.
  • the non-3GPP mobility management network element determines the handover control scheme of the user plane data path for the terminal according to the access capability of the terminal, that is, in the non-3GPP.
  • the mobility management network element obtains the radio access capability information of the terminal to support a single-issue mode, such as: supporting a dual-receive single-issue mode or a single-receive single-issue mode, and indicating that the PDN-GW will be used before the non-3GPP network bearer is established.
  • the user plane data transmission path of the terminal is switched from the 3GPP network to the non-3GPP network, so that the dual-receive single-issue terminal or the single-receive single-issue terminal receives data through the data transmission path of the non-3GPP network user plane in the non-3GPP network bearer establishment process. , significantly reduces the probability of data loss and reduces jitter in the data transfer process.
  • FIG. 6 is a signaling interaction diagram of a method for controlling a data transmission path according to a sixth embodiment of the present invention.
  • the difference between this embodiment and the embodiment shown in FIG. 5 is that the terminal supports the access capability in the dual-receive dual-issue mode.
  • this embodiment includes:
  • Step 61 The terminal accesses the 3GPP network through the 3GPP network mobility management network element, and the terminal can access the service through the 3GPP network.
  • the 3GPP network may include LTE or Legacy 3GPP, such as UTRAN/GERAN and the like.
  • the specific functional entities of the 3GPP network mobility management network element are different for different 3GPP networks.
  • the functional entity of the LTE network mobility management network element is ⁇ E;
  • Legacy 3GPP such as UTRAN/GERAN, the functional entity of the network mobility management network element is the SGSN.
  • Step 63 After determining that the device is to be switched to the non-3GPP network, the terminal sends an attach request (At tach Reques t) of the type to the non-3GPP network mobility management network element, where the attach request carries the radio access capability information of the terminal.
  • the wireless access capability information includes: dual-issue dual-issue (Dua l Rx/Tx) mode.
  • the non-3GPP network may include: an untrusted non-3GPP (Non- rusted Non3GPP) evolved network and a trusted non-3GPP (Trusted Non3GPP) evolved network.
  • Non-trusted non-3GPP (Non- rusted Non3GPP) evolved networks such as: IWLAN networks, etc.; trusted non-3GPP evolved networks such as: CDMA2000 EV-D0, WIMAX network, and the like.
  • the specific functional entities of the non-3GPP network mobility management network element are different for different non-3GPP networks.
  • the functional entity of the IWLAN network mobility management network element is IWLAN ePDG
  • the functional entity of the WIMAX network mobility management network element is WIMAX ASN GW
  • the functional entity of the network mobility management network element is HRPD AN or HSGW.
  • the terminal can report its own radio access capability information to the non-3GPP mobility management network element in the initial access procedure, except that the terminal can report its own radio access capability information to the non-3GPP mobility management network element in the handover attach procedure.
  • the attachment request with the attachment type being the initial access is sent to the non-3GPP mobility management network element, and the radio access capability information of the terminal is carried in the attachment request.
  • Step 65 Initiate an access process of the terminal to the target network.
  • Step 67 The non-3GPP network mobility management network element acquires radio access capability information of the terminal according to the received attach request, and determines the access capability of the terminal, and adopts corresponding handover control that matches the radio access capability information of the terminal.
  • the non-3GPP network mobility management network element determines that the connection establishment to the network anchor point is not initiated before the non-3GPP network establishes the bearer for the terminal, and the radio access capability information of the terminal is in the dual-received dual-issue mode. After the non-3GPP network establishes a bearer for the terminal, the network anchor is instructed to switch the user plane data transmission path from the 3GPP network to the non-3GPP network.
  • Step 69 The non-3GPP network initiates a corresponding bearer establishment procedure of the terminal.
  • Step 611 When the non-3GPP network establishes a bearer corresponding to the terminal, the non-3GPP network mobility management network element sends a connection establishment update message to the PDN-GW, where the connection setup update message is used to instruct the PDN-GW to perform the corresponding Inter-network handover of the user plane data transmission path, that is, the user plane data transmission path corresponding to the terminal is switched from the 3GPP network to the non-3GPP network.
  • Step 613 When receiving the connection establishment update message, the PDN-GW switches the user plane data transmission path corresponding to the terminal from the 3GPP network to the non-3GPP network, and does not send the connection update response message to the 3GPP network mobility management network element.
  • the PDN-GW transmits data to the terminal through the user plane data transmission path of the non-3GPP network.
  • the terminal can receive data from the PDN-GW through the non-3GPP network radio.
  • Step 615 completing the remaining cross-network switching process.
  • the remaining inter-network handover procedure may further include a process in which the PDN-GW initiates deactivation of the allocated resources of the 3GPP network and the terminal.
  • the non-3GPP mobility management network element determines the handover control scheme of the user plane data path for the terminal according to the access capability of the terminal, that is, in the non-3GPP.
  • the mobility management network element obtains the wireless access capability information of the terminal to support the dual-issue mode, for example, supports the dual-receive dual-issue mode, and after the non-3GPP network bearer is established, instructs the PDN-GW to change the user plane data transmission path of the terminal from 3GPP network handover to non-3GPP The network, so that the dual-receiving dual-issue terminal receives data through the data transmission path of the user plane of the 3GPP network during the non-3GPP network bearer establishment process, which significantly reduces the jitter in the data transmission process.
  • FIG. 7 is a schematic structural diagram of a mobility management network element according to a seventh embodiment of the present invention. As shown in FIG. 7, the mobility management network element of this embodiment includes: an obtaining module 71 and a control module 72.
  • the obtaining module 71 is configured to obtain wireless access capability information of the terminal.
  • the control module 72 is configured to perform cross-network handover control of the data transmission path corresponding to the terminal according to the radio access capability information.
  • the obtaining module 71 may include: a first acquiring unit 71 1 .
  • the first obtaining unit 71 1 is configured to acquire radio access capability information of the terminal in a handover network attaching procedure of the terminal.
  • control module 72 may include: a first switching indication unit 721 and a second switching indication unit 722.
  • the first handover instructing unit 721 is configured to: when the radio access capability information includes the single-issue mode, instruct the network anchor point to perform a data transmission path corresponding to the terminal before the target network completes the bearer establishment of the terminal The source network switches to the target network.
  • the second handover indication unit 722 is configured to: when the radio access capability information includes the dual-issue mode, and after the target network completes the bearer establishment of the terminal, instruct the network anchor to perform a data transmission path corresponding to the terminal, Switch from the source network to the target network.
  • the second handover indication unit 722 is further configured to: when the radio access capability information of the terminal is in the dual-issue mode, indicate that the network anchor point is to be connected to the terminal before the target network completes the bearer establishment of the terminal. The corresponding data transmission path remains on the source network.
  • the terminal performs the inter-network handover of the user plane data transmission path according to the radio access capability information of the terminal, so that the terminal with different access capabilities adopts a control strategy matching the terminal access capability in the inter-network handover process to ensure The terminal can correctly receive the data sent by the network anchor during the inter-network handover process, thereby reducing the probability of data loss and jitter of data transmission.
  • the acquiring module of the mobility management network element in this embodiment may be further configured to acquire radio access capability information of the terminal in an initial network attaching process of the terminal, and send the radio access capability information to a base station. .
  • the mobility management network element may send the obtained radio access capability information of the terminal to the eNodeB (the eNB for short), so that the eNB can use the radio access capability information of the terminal in the service processing procedure.
  • the Sl-AP (S1 application layer) message is obtained from the mobility management network element, thereby reducing the waste of air interface resources caused by the eNB acquiring the terminal radio access capability information from the air interface.
  • FIG. 8 is a schematic structural diagram of a terminal according to an eighth embodiment of the present invention. As shown in FIG. 8, the terminal of this embodiment includes: a radio access capability information sending module 81 and a receiving and feedback module 82.
  • the radio access capability information sending module 81 is configured to send its own radio access capability information to the network side.
  • the receiving and feedback module 82 is configured to receive data and send feedback information to the network side by using a data transmission path determined by the network side according to the radio access capability information.
  • the terminal reports its own radio access capability information to the network side, which facilitates the network side to perform inter-network handover control of the user plane data transmission path according to the access capability of the terminal, so that terminals with different access capabilities are in the cross.
  • a control strategy matching the terminal access capability is adopted to ensure that the terminal can correctly receive the data sent by the network anchor point during the inter-network handover process, thereby reducing the probability of data loss and the jitter of data transmission.
  • FIG. 9 is a schematic structural diagram of a control system of a data transmission path according to a ninth embodiment of the present invention.
  • the control system of the data transmission path of this embodiment includes: a terminal 91 and a network side device 92.
  • the terminal 91 is configured to send its own radio access capability information to the network side device 92.
  • the network side device 92 is configured to perform inter-network handover control of the data transmission path corresponding to the terminal 91 according to the radio access capability information of the terminal 91. .
  • the network side device 92 may include: target network mobility management Network element 922 and network anchor point 923.
  • the target network mobility management network element 922 is configured to send an indication of an inter-network handover of the data transmission path corresponding to the terminal 91 to the network anchor 923 according to the radio access capability information of the terminal 91.
  • the network anchor 923 is configured to perform handover of the user plane data transmission path corresponding to the terminal 91 from the source network to the target network according to the indication information from the target network mobility management network element 922.
  • the terminal reports its own radio access capability information to the network side, which facilitates the network side to perform inter-network handover control of the user plane data transmission path according to the access capability of the terminal, so that terminals with different access capabilities are in the cross.
  • a control strategy matching the terminal access capability is adopted to ensure that the terminal can correctly receive the data sent by the network anchor point during the inter-network handover process, thereby reducing the probability of data loss and the jitter of data transmission.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment as described in the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un procédé et un système pour contrôler un chemin de transmission de données, un élément de réseau de gestion de mobilité et un terminal. Le procédé destiné à contrôler le chemin de transmission de données comprend : l'obtention des informations de capacité d'accès radio du terminal (11); selon les informations de capacité d'accès radio, la mise en œuvre du contrôle de transfert intercellulaire sur le réseau pour le chemin de transmission de données correspondant au terminal (13). Le mode de réalisation de cette invention met en œuvre le transfert intercellulaire sur le réseau du chemin de transmission de données dans le plan de l'utilisateur pour le terminal selon les informations de capacité d'accès radio du terminal, il permet aux terminaux ayant des capacités d'accès différentes d'adopter une politique de contrôle correspondant à la capacité d'accès du terminal pendant le transfert intercellulaire sur le réseau, et garantit que le terminal reçoit précisément les données envoyées par le nœud d'ancrage du réseau pendant le transfert intercellulaire sur le réseau, ainsi la probabilité de perte de données et la gigue de la transmission des données sont abaissées.
PCT/CN2009/075439 2008-12-30 2009-12-09 Procédé et système pour contrôler un chemin de transmission de données, élément de réseau de gestion de mobilité et terminal WO2010075729A1 (fr)

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