WO2018000310A1 - 一种数据路径的确定方法以及控制装置 - Google Patents

一种数据路径的确定方法以及控制装置 Download PDF

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Publication number
WO2018000310A1
WO2018000310A1 PCT/CN2016/087866 CN2016087866W WO2018000310A1 WO 2018000310 A1 WO2018000310 A1 WO 2018000310A1 CN 2016087866 W CN2016087866 W CN 2016087866W WO 2018000310 A1 WO2018000310 A1 WO 2018000310A1
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Prior art keywords
data path
request message
target
core network
control device
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PCT/CN2016/087866
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English (en)
French (fr)
Inventor
克里斯⋅马里斯
克罗尔⋅朱塞佩
卢克⋅克里斯汀
王岩
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华为技术有限公司
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Priority to PCT/CN2016/087866 priority Critical patent/WO2018000310A1/zh
Publication of WO2018000310A1 publication Critical patent/WO2018000310A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for determining a data path and a controller.
  • mobile phone users can access the network through mobile phones to get in touch with others or browse the web.
  • Mobile access to the network requires external nodes such as communication infrastructure, such as base stations, various types of gateways, and core networks.
  • the external nodes transmit data to each other to form a data path to carry the data stream of the mobile phone.
  • the mobile phone can be attached by the base station after being powered on, or the base station can be switched when the mobile phone is moved after the mobile phone is attached.
  • the method for attaching or switching the base station is based on the Global Packet Radio Service Tunneling Protocol (GTP). )of.
  • GTP Global Packet Radio Service Tunneling Protocol
  • the core network needs to determine a data path through GTP, and the new data path will be established in a series of linked GTP forms.
  • the Mobility Management Entity is in the core node of the signaling control in the core network, and the creation of the user data path (bearer) of the core network is the MME as the core node, and the mobile phone is controlled.
  • Each node such as a base station, a service gateway, and a public data network gateway, creates a bearer for the user.
  • the mobile phone needs to be booted, it needs to be attached:
  • the User Equipment initiates an attach request to the MME; 2.
  • the MME obtains a Serving GateWay (S-GW) list; 3.
  • the MME obtains a Public Data Network GateWay (P-GW).
  • the MME selects a pair of S-GWs and P-GWs; 5.
  • the MME initiates a session creation request to the S-GW; 6.
  • the S-GW sends a bearer setup request to the P-GW; 7.
  • the P-GW goes to the S- The GW sends a bearer setup response.
  • the S-GW sends a create session response to the MME.
  • the MME sends an initial context setup request to the base station; the user plane resource allocation of the air interface is completed, and the base station to terminal connection is established.
  • the element already has an uplink message transmission condition; 10.
  • the base station sends an initial context setting response to the MME; 11. After the process is completed, all the downstream network elements already have the downlink message transmission condition; thus, the
  • the source base station sends a request handover message to the target base station; 2.
  • the target base station creates a radio bearer correlation ID and an X2 forwarding tunnel endpoint identifier (TEID); 3.
  • the source base station sends a handover indication message handover command to the UE;
  • the UE accesses the target base station process; 5.
  • the target base station sends a data path switching message to the MME to initiate a core network side path switching process; 6. If the S-GW changes, the new S-GW initiates the process of creating a bearer; if the S-GW No change, that is, the original S-GW initiates the modification of the bearer process; 7.
  • the new S-GW initiates the modification of the bearer process; 8.
  • the MME deletes the bearer on the source S-GW; thus, the new bearer has been established, and the old bearer has been established. Delete or modify, the switching process is complete.
  • the embodiment of the present application provides a method for determining a data path and a control apparatus for determining, for a UE, a target data path that carries a data flow thereof.
  • the first aspect of the embodiments of the present invention provides a method for determining a data path, including:
  • the control device receives a data path request message sent by the control plane of the core network, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the data path request message is controlled by the core network Obtaining signaling generation according to the received data path; the control device determines the target data path for the UE according to the data path request message, the target data path is one of available data paths; the control device sends the first to the classifier An indication message, the first indication information is used to indicate that the classifier configures the target data path to carry the data stream of the UE.
  • the data path control unit is included in a Service Function Chaining (SFC), and the SFC is configured to efficiently configure a target data path for the UE.
  • SFC includes a data path control unit and a plurality of NFs.
  • the control device in the SFC receives the data path request, it can return a target data path. Since it is no longer necessary to use the cumbersome steps in the GTP for each attachment or handover base station, the speed of the terminal accessing the core network is more fully utilized.
  • the first implementation manner of the first aspect of the embodiment of the present invention includes:
  • the data path acquisition signaling is an attach request message or a request handover message, and the attach request message is generated by the UE, and the request handover message is generated by the base station, and the request handover message indicates that the UE switches from the source base station to the target base station.
  • the control device acquires an Internet Protocol (IP) of the UE from the data path request message, and the IP of the UE is configured by the core network control plane from an Internet Protocol Assignment Entity according to the attach request message. Obtained in IPAE).
  • IP Internet Protocol
  • the UE may be assigned an IP. Specifically, the core network control plane generates an IP request according to the UE attach request message, sends the IP request to the IPAE, and then receives an IP returned by the IPAE as the UE, where the IP is used to perform determining the target data path. Can be used as the UE identity. It should be noted that the core network control plane can also obtain the subscription information of the UE, and use this as an important basis for determining which available data path is used as the target data path.
  • the IPAE may also be integrated in the control plane of the core network, or may be used as a single network element. This is not limited. Since the IP is allocated to the UE, it is no longer necessary to distinguish the GTP and IP of the UE. It is more convenient to perform business.
  • the control device sends a cache request to the source data outsource data classifier (C-out) according to the data path request message, where the cache request is used to indicate that the source C-out cache is from the incoming data traffic classifier ( a downlink data stream of the classifier for inbound data traffic, C-in), the source C-out is used for direct communication connection with the source base station; the control device determines an indirect forwarding data path, and the indirect forwarding data path is used to carry the source from the source C-out to the target C-out to the downlink data stream of the UE, the target C-out is used for direct communication connection with the target base station; the control device sends a second indication message to the C-in, the C-in And configured to bind the downlink data stream and the indirect forwarding data path according to the second indication information, so that the indirect forwarding data path carries the downlink data stream; and the control device sends indirect forwarding establishment information to the core network control plane, where Indirect forwarding to establish information The request switching is performed on the control plane of
  • the classifier can successfully classify the data stream and bind the UE and the corresponding data path, the confusion of the data stream is avoided, and the solution of the present invention is well performed.
  • a second aspect of the embodiments of the present invention provides a method for determining a data path, including:
  • the core network control plane receives the data path acquisition signaling; the core network control plane sends a data path request message to the control apparatus according to the data path acquisition signaling, where the data path request message is used to request the target data path, where the target data path is used for
  • the data stream carrying the subscription terminal UE the control device is configured to determine, according to the data path request message, a target data path, where the target data path is one of available data paths.
  • the first implementation manner of the third aspect of the embodiment of the present invention includes:
  • the data path request message is an IP carrying the UE.
  • the second implementation manner of the second aspect includes:
  • the data path acquisition signaling is an attach request message or a request handover message, and the attach request message is generated by the UE, and the request handover message is generated by the base station, and the request handover message indicates that the UE switches from the source base station to the target base station.
  • the UE can be efficiently allocated a target data path carrying a data stream using the techniques of the present invention.
  • the third implementation manner of the second aspect of the embodiment of the present invention includes:
  • the core network control plane sends an IP request to the IPAE according to the attach request message; the core network control plane receives the IP of the UE returned by the IPAE according to the IP request.
  • the UE can be efficiently allocated a target data path carrying a data stream using the techniques of the present invention.
  • a third aspect of the embodiments of the present invention provides a data path control apparatus, including:
  • a first receiving module configured to receive a data path request message sent by a control plane of the core network, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the data path request message Generating, by the core network control plane, the signaling generation according to the received data path;
  • the first determining module is configured to: according to the data path request message received by the first receiving module Determining, by the UE, the target data path, the target data path being one of the available data paths; the first sending module, configured to send a first indication message to the classifier, where the first indication information is used to indicate the classifier configuration
  • the target data path carries the data stream of the UE.
  • the first implementation manner of the third aspect of the embodiment of the present invention includes:
  • the data path acquisition signaling is an attach request message or a request handover message, and the attach request message is generated by the UE, and the request handover message is generated by the base station, and the request handover message indicates that the UE switches from the source base station to the target base station.
  • the UE can be efficiently allocated a target data path carrying a data stream using the techniques of the present invention.
  • the first implementation manner of the third aspect, the second implementation manner of the third aspect of the embodiment of the present invention includes:
  • an obtaining module configured to obtain an Internet Protocol address IP of the UE from the data path request message, where the IP of the UE is obtained by the core network control plane from the Internet Protocol Address Assignment Entity IPAE according to the attach request message.
  • a fourth aspect of the embodiments of the present invention provides a data path management unit, including:
  • a second receiving module configured to receive a data path request message sent by a control plane of the core network, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the UE, where the data path request message is sent by the
  • the core network control plane obtains the signaling generation according to the received data path
  • the second determining module is configured to determine, according to the data path request message received by the second receiving module, the target data path, where the target data path is available.
  • a fifth aspect of the embodiments of the present invention provides a core network control plane, including:
  • a third receiving module configured to receive the data path acquisition signaling
  • the second sending module is configured to send a data path request message to the control device according to the data path acquisition signaling received by the third receiving module, where the data path request message is used
  • the target data path is used to carry the data stream of the subscription terminal UE
  • the control device is configured to bind the UE and the target data path according to the data path request message, where the target data path is an available data path.
  • the first implementation manner of the fifth aspect of the embodiment of the present invention includes:
  • the third sending module is configured to send an IP request to the IPAE according to the attach request message
  • the fourth receiving module is configured to receive the IP of the UE returned by the IPAE according to the IP request sent by the third sending module.
  • a sixth aspect of the embodiments of the present invention provides a control apparatus, including:
  • first transceiver a first transceiver, a first memory, a first processor, and a first bus; the first transceiver, the first memory, and the first processor are connected by the first bus; the first transceiver is configured to receive a core network a data path request message sent by the control plane, the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the data path request message is controlled by the core network according to the received data.
  • the first memory is configured to store a program, the data path request message received by the first transceiver; the first processor is configured to determine the target data path for the UE according to the data path request message, where The target data path is one of the available data paths.
  • the first transceiver is further configured to send a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path to carry data of the UE. flow.
  • a seventh aspect of the embodiments of the present invention provides a core network control plane, including:
  • the second transceiver is configured to receive a data path Obtaining signaling, and acquiring, by the control device, a signaling data path request message according to the data path, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the control device uses Binding the UE and the target data path according to the data path request message, the target data path being one of available data paths;
  • the second memory is configured to store the program, the data path acquisition letter received by the second transceiver And the data path request message sent by the transceiver; the second processor is configured to execute the program, and generate the data path request message.
  • the embodiment of the present invention has the following advantages:
  • the data path request message is used to request a target data path, where the data path request message is used to carry a data stream of the subscription terminal UE, where the data path request message is sent by the core network,
  • the control plane acquires signaling generation according to the received data path, and the control device determines the target data path for the UE according to the data path request message, the destination The target data path is one of the available data paths, and the control device sends a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path to carry the data stream of the UE, and therefore no longer It is necessary to use the cumbersome steps in the GTP for each attachment or handover base station, so that the speed of the terminal accessing the core network and the network resources are more fully utilized.
  • 1a is a schematic diagram of a frame of a communication system in an embodiment of the present application.
  • FIG. 1b is a schematic diagram of a frame of a data path determining system according to an embodiment of the present application
  • FIG. 2a is a schematic diagram of an embodiment of a method for determining a data path according to an embodiment of the present application
  • FIG. 2b is a schematic diagram of another embodiment of a method for determining a data path according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an embodiment of a method for determining a data path according to an embodiment of the present application
  • FIG. 3b is a schematic diagram of another embodiment of a method for determining a data path according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an embodiment of a control device according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of an embodiment of a data path control unit according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an embodiment of a control plane of a core network according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an embodiment of a control device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an embodiment of a control plane of a core network according to an embodiment of the present application.
  • Embodiments of the present invention provide a method for determining a data path and a controller for determining, for a UE, a target data path that carries a data flow thereof.
  • the present scheme can be used in the communication system as shown in FIG. 1a.
  • the system is composed of a core network, a plurality of base stations, and a subscription terminal UE having a communication connection with each base station.
  • the core network in the system may receive the data path acquisition signaling sent by the base station to the UE, where the data path acquisition signaling may be an attach request initiated by the UE, or may be a request handover initiated by the base station. This is not a limitation.
  • the target data path may be determined for the UE, so that the data stream of the UE may be carried into the target data path.
  • the UE involved in the embodiment of the present invention may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a RAN Radio Access Network, which can be a mobile UE, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • a mobile UE such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • PCS Personal Communication Service
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a wireless UE may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, Terminal Device, User Agent, User Device, or User Equipment.
  • the mobile phone includes: a radio frequency (RF) circuit, a memory, an input unit, a display unit, a sensor, an audio circuit, a wireless fidelity (WiFi) module, a processor, and a power supply.
  • RF radio frequency
  • the mobile phone structure described above does not constitute a limitation on the mobile phone, and may include more or less. Parts, or combinations of parts, or different parts.
  • the data path of the subscribed UE accessing the network may be determined by using a determining system of the data path as shown in FIG. 1b as the target data path, so that the data flow of the UE passes.
  • the target data path may be determined by using a determining system of the data path as shown in FIG. 1b as the target data path, so that the data flow of the UE passes.
  • the target data path may be determined by using a determining system of the data path as shown in FIG. 1b as the target data path.
  • the core network control plane, the data path control unit, and the network function (NF) are all part of the core network, wherein the core network control plane is the core network control plane of the core network, and the data path
  • the control unit is a data path management unit of the core network, and the core network control plane is a network function unit node in the network.
  • the data path request may be sent to the data path control unit to determine that the target data path carries the data stream of the UE.
  • the target data path is composed of multiple NFs, and the UE accesses the network through the multiple NFs.
  • the core network control plane may include a MME (moblility management entity) mobility management entity for requesting IP and data paths for the user when the user attaches or switches.
  • MME mobility management entity
  • the control device receives the data path request to the UE sent by the control plane of the core network, and the data path request is obtained by the control plane of the core network according to the received data path.
  • the control device determines a target data path for the UE, the target data path is included in a predetermined available data path, and the control device sends a first indication message to the classifier, the classifier is configured to use the first
  • the indication information is bound to the UE and the target data path, so that the target data path carries the data flow of the UE, so that it is no longer necessary to use the cumbersome steps in the GTP for each attachment or handover base station, so that the terminal accesses the core network.
  • the speed of network resources is more fully utilized.
  • the data path acquisition signaling includes an attach request message and a request handover message, the following description is separately described in two parts.
  • the system includes a UE, a core network control plane, a data path control unit, and a plurality of NFs
  • the data path control unit includes a control device, C-in (Classifier for inbound) Data traffic) into the data traffic classifier and C-out (Classifier for inbound data traffic) into the data traffic classifier, where C-in and C-out are collectively referred to as a classifier, where C-out is used to receive the uplink from the base station Data and bind it on
  • the row data stream is corresponding to the data path, so that the data path carries the uplink data stream, and C-in is used to receive downlink data flowing into the core network, and ensures that the downlink data is carried on the corresponding data path.
  • the classifier is used to ensure that the target data path carries a specific data stream.
  • the UE needs to communicate with the core network through the base station.
  • an embodiment of a method for determining a data path in the embodiment of the present application includes:
  • the core network control plane receives an attach request message.
  • an attach request is initiated, and the UE searches for the corresponding base station.
  • the base station sends an attach request message.
  • the base station requests the UE to access the target data path of the core network, that is, forwards the attach request message to the core network control plane in the core network, so that the core network can bind the target to the UE.
  • the data path to carry the data stream of the UE.
  • the core network control plane when the core network control plane receives the attach request message, the UE needs to perform related processes such as authentication, location update, and admission control, and then the HSS (Home Subscriber)
  • the server belongs to the user server and initiates a request for security, authentication, location update, and the like of the UE.
  • the specific process is common knowledge and is not described here.
  • the Home Subscriber Server may be integrated into the control plane of the core network, or may be used as a single network element, which is not limited herein.
  • the core network control plane obtains the IP of the UE from the IPAE according to the attach request message.
  • the UE may be assigned an IP. Specifically, the core network control plane generates an IP request according to the UE attach request message, sends the IP request to the IPAE, and then receives an IP returned by the IPAE as the UE, where the IP is used to perform determining the target data path. Can be used as the UE identity. It should be noted that the core network control plane can also obtain the subscription information of the UE, and use this as an important basis for determining which available data path is used as the target data path. In some possible embodiments, the IPAE may also be integrated in the control plane of the core network, or may be used as a network element separately, which is not limited herein.
  • the core network control sends a data path request message to the control device, where the data path request message is used to request the target data path.
  • the data path request message may be sent to the control device in the data path management unit, where the data path request message carries the IP of the UE,
  • the IP of the UE is used as the identifier of the UE, and the data path control unit may determine the target data path for the IP.
  • the data path control unit may include a control device and a classifier.
  • the core network control plane sends the data path request to the control device, so that the control device determines the target data path.
  • the data path control unit is included in a Service Function Chaining (SFC), and the SFC is configured to efficiently configure a target data path for the UE.
  • SFC includes a data path control unit and a plurality of NFs. When the control device in the SFC receives the data path request, it can return a target data path.
  • the control device determines, according to the data path request message, a target data path for the UE, where the target data path is one of available data paths.
  • the control device may select one of the predetermined data paths as the target data path, where the target data path is used to carry the data stream of the UE.
  • control device may determine a plurality of available data paths through deployment and configuration.
  • the specific deployment process is that the control device pre-defines the forwarding rule of the NF, which specifies the forwarding direction of the specific data flow carried by each NF, such as when the first NF receives the first data flow, according to the forwarding rule. Instructing that the first data stream should be forwarded to the second NF, the first NF forwards the first data stream to the second NF. The forwarding rule is sent to each NF. After multiple NFs determine their own forwarding rules, multiple available data paths are formed. For example, the first data path may be composed of the first NF, the second NF, the third NF, the ith NF, and when the first NF receives the first data stream, the first NF, the second NF, and the third NF...
  • the data path of the i-th NF if the first data stream refers to the data stream of the UE, the data stream of the UE may be referred to as being carried in the data path. It should be noted that the same NF may have different forwarding rules for different data flows, which is not limited herein.
  • the specific configuration process is that the control device will be available for each Each of the data paths is bound to a Network Service Header (NSH), and each available data path has a corresponding NSH as its identity.
  • NSH Network Service Header
  • the deployment and configuration process is pre-completion, and when the control device allocates a target data path to the UE, the UE is bound to an NSH, and the UE and the data path that are bound to the same NSH are bound.
  • the data path is referred to as a target data path, and the target data path carries the data stream of the UE.
  • the target data path may be divided into a target uplink data path and a downlink data path, and the target uplink data path and the downlink data path may be configured by the same NF, or may be composed of different NFs, which is not limited herein.
  • the UE it is required to determine whether the UE is a subscription user. If the UE is a subscription user, it is no longer necessary to perform authentication or flow control on each node in the target data path. In order that the UE can directly use the target data path, the method in which the UE uses the SFC system to determine the target data path carrying the data stream is very efficient.
  • the control device sends a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path to carry the data stream of the UE.
  • the target data path can be sent to the classifier.
  • the target data path may be divided into two parts, and the target uplink data path and the target downlink data path are respectively sent to C-out and C-in, and C-out is used to ensure that the target data path bearer is from the UE through the base station.
  • Upstream data stream, C-in is used to ensure that the target data path carries the downlink data stream entering the core network to the UE.
  • the information includes the category 5 tuple (source IP, target IP, protocol number, source port, target port) of the downlink data stream and the mapping rule of the downlink data stream to the NSH.
  • the information may also include a category 5-tuple of the upstream data stream or a 3rd Generation Partnership Project (3GPP) class-based unique identifier, such as an international mobile subscriber identity code. (, IMSI) or temporary International Mobile Subscriber Identity (Temporary IMSI, T-IMSI) and mapping rules for downstream data flows to NSH.
  • 3GPP 3rd Generation Partnership Project
  • the data path management unit may serve as a device, that is, a control device and a classifier as a part of the internal of the data path management unit;
  • the data path management unit can also be used as a system, including a system for controlling devices and classifiers, which is not limited herein.
  • the request in the UE's attach request message has been executed, that is, the UE may have a certain target data path to access the network.
  • the control device may send a response message to the control plane of the core network to indicate that the attached service has been completed, and the control plane of the core network forwards the response message to the base station, and the base station may allocate the UE.
  • the air interface resources are connected to the network. The specific process is common knowledge and will not be described here.
  • FIG. 3a it is a schematic diagram of an embodiment of a method for determining a data path, that is, when the data path acquisition signaling is a request handover message.
  • the signal of the source base station gradually becomes weaker, and the signal of the target base station gradually increases. Only the terminal knows whether the signal of each cell in its current location is good or bad.
  • the terminal measures the signal strength of the current cell and the neighboring cell, and reports the signal strength to the source base station.
  • the source base station determines whether to initiate the handover and switch to which cell according to the signal strength of the current cell and the available cell reported by the terminal.
  • the source base station may generate a request handover message indicating that the UE switches from the source base station to the target base station.
  • the base station may generate a request handover message indicating that the UE switches from the source base station to the target base station.
  • the base station may generate a request handover message indicating that the UE switches from the source base station to the target base station.
  • the base station may generate a request handover message indicating that the UE switches from the source base station to the target base station.
  • the base station may generate a request handover message indicating that the UE switches from the source base station to the target base station.
  • FIG. 3b another embodiment of a method for determining a data path in an embodiment of the present application includes:
  • the core network control plane receives the request handover message.
  • the UE is communicatively coupled to the source base station in a wireless manner.
  • the source base station initiates a request handover to the UE.
  • one C-out corresponds to one base station.
  • the source C-out corresponds to the source base station
  • the target C-out corresponds to the target base station, that is, the source C-out receives the source base station.
  • the upstream data stream that is, the target C-out receives the upstream data stream from the target base station.
  • the UE since the UE has been attached by the source base station, This UE is already assigned a target data path for carrying the data stream of the UE. Moreover, the UE also has a certain IP. When the UE switches to the target base station, it needs to allocate a new target data path to the UE, that is, determine a new target data path for the IP of the UE, and cut off the original target data. The target data path is bound to the UE, that is, the original target data path is stopped to carry the data stream of the UE.
  • the core network control sends an indirect forwarding data path request message to the control device.
  • the source C-out can be forwarded through indirect The data path forwards the received downstream data stream to the target C-out, thus requiring an indirect forwarding data path for transmitting the data stream of the source C-out to the target C-out.
  • the control device sends a cache request to the source C-out.
  • the control device After receiving the indirect forwarding data path request message, the control device sends a buffer request to the source C-out, so that the source C-out buffers the downlink data stream from the C-in, in preparation for forwarding the downlink data stream through the indirect forwarding data path. Forward to the target C-out.
  • the source C-out may first buffer the received downlink data stream from the C-in, and then send the downlink data stream to the target C-out through the indirect forwarding data path, so that when the UE switches to the target base station, the receiving The downstream data stream of the C-out.
  • the control device determines an indirect forwarding data path.
  • control device may determine to forward the data path indirectly such that the downstream data stream of the source C-out buffer may reach the target C-out through the following path: source C-out-> indirect forwarding data path-> Target C-out.
  • control device determines one of the predetermined available data paths as an indirect forwarding data path.
  • the indirect forwarding data path is composed of multiple NFs, and the control device implementation determines that the forwarding rule is sent to multiple NFs, so that multiple NFs form one data path.
  • the control device sends a second indication message to the source C-out and the target C-out.
  • the control device may send a second indication message including the indirect forwarding data path to the source C-out and the target C-out to indicate that the source C-out and the target C-out are bound to the indirect. Forwarding the data path and the downlink data stream such that the indirect forwarding data path carries the downlink data stream from the source C-out to the target C-out, so that the target C-out can be cut After the change is completed, the downlink data stream is sent to the UE through the target base station.
  • the control device sends indirect forwarding establishment information to the control plane of the core network.
  • the indirect forwarding establishment information may be sent to the control plane of the core network, so that the control plane of the core network may request a new target data path for the UE.
  • the core network control sends a data path request message to the control device, where the data path request message is used to request the target data path.
  • the control device determines, according to the data path request message, a target data path for the UE, where the target data path is one of available data paths.
  • the control device sends a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path to carry the data stream of the UE.
  • the steps 307 to 309 in the embodiment of the present invention are the same as the above steps 203 to 205, and details are not described herein again.
  • the location of the UE may be updated in the tracking area in the HSS, that is, the HSS is instructed to connect to the target base station, and the information of the UE in the source base station is deleted, and details are not described herein. .
  • an embodiment of a control device 400 in the embodiment of the present application includes:
  • the obtaining module 401 is configured to obtain an Internet Protocol address IP of the UE from the data path request message, where the IP of the UE is obtained by the core network control plane from the Internet Protocol Address Assignment Entity IPAE according to the attach request message.
  • the first receiving module 402 is configured to receive a data path request message sent by the core network control plane, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the data path request The message is generated by the core network control plane according to the received data path.
  • the first determining module 403 is configured to determine, according to the data path request message received by the first receiving module 402, the target data path, where the target data path is one of available data paths.
  • the first sending module 404 is configured to send a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path determined by the first determining module 403 to carry the data stream of the UE.
  • a data path control unit 500 in the embodiment of the present application is provided. Examples include:
  • the second receiving module 501 is configured to receive a data path request message sent by the core network control plane, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the UE, where the data path request message is
  • the core network control plane acquires signaling generation according to the received data path.
  • the second determining module 502 is configured to determine, according to the data path request message received by the second receiving module 501, the target data path, where the target data path is one of available data paths.
  • the configuration module 503 is configured to configure the target data path determined by the second determining module 502 to carry the data flow of the UE.
  • an embodiment of a core network control plane 600 in the embodiment of the present application includes:
  • the third sending module 601 is configured to send an IP request to the IPAE according to the attach request message.
  • the fourth receiving module 602 is configured to receive the IP of the UE returned by the IPAE according to the IP request sent by the third sending module 601.
  • the third receiving module 603 is configured to receive data path acquisition signaling.
  • the second sending module 604 is configured to send, according to the data path acquisition signaling received by the third receiving module 603, a data path request message to the control device, where the data path request message is used to request a target data path, where the target data path is used for
  • the control device is configured to configure, according to the data path request message, the data stream that carries the UE by the target data path, where the target data path is one of available data paths.
  • a control apparatus 700 in the embodiment of the present application includes:
  • the first transceiver 702, the first memory 703, and the first processor 704 are connected by the first bus 701.
  • the first transceiver 702 is configured to receive a data path request message sent by a control plane of the core network, where the data path request message is used to request a target data path, where the target data path is used to carry a data flow of the subscription terminal UE, and the data path request The message is generated by the core network control plane according to the received data path.
  • the first transceiver 702 can include an English communication interface between the first processor 704 and a standard communication subsystem.
  • the first transceiver 702 may further include a communication interface under the EIA-RS-232C standard, that is, a serial binary between a Data Terminal Equipment (DTE) and a Data Circuit-terminating Equipment (DCE).
  • the communication interface of the data exchange interface technology standard may also include a communication interface under the RS-485 protocol, which is not limited herein.
  • the first memory 703 is configured to store a program, the data path request message received by the first transceiver 702.
  • the first memory 703 may include a volatile memory, such as a random-access memory (RAM); the first memory 703 may also include a non-volatile memory. For example, a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the first memory 703 may further include a combination of the above types of memories, which is not limited herein.
  • RAM random-access memory
  • non-volatile memory such as a non-volatile memory.
  • SSD solid-state drive
  • the first memory 703 may further include a combination of the above types of memories, which is not limited herein.
  • the first memory 703 is further configured to store program instructions, and the first processor 704 can invoke program instructions stored in the first memory 703.
  • the first processor 704 is configured to determine, according to the data path request message, the target data path for the UE, where the target data path is one of available data paths.
  • the first processor 704 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • CPU central processing unit
  • NP network processor
  • the first processor 704 can further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the first transceiver 702 is further configured to send a first indication message to the classifier, where the first indication information is used to indicate that the classifier configures the target data path to carry the data stream of the UE.
  • a core network control plane 800 in the embodiment of the present application includes:
  • the second transceiver 802, the second memory 803, and the second processor 804 are connected by the second bus 801.
  • the second transceiver 802 is configured to receive data path acquisition signaling, and obtain, by the control device, a signaling data path request message according to the data path, where the data path request message is used to request a target data path, where the target data path is used for carrying The data stream of the subscription terminal UE, the control device is configured to determine, according to the data path request message, a target data path, where the target data path is one of available data paths.
  • the second transceiver 802 can include a communication interface between the second processor 804 and a standard communication subsystem.
  • the second transceiver 802 may further include a communication interface under the EIA-RS-232C standard, that is, a serial binary between a Data Terminal Equipment (DTE) and a Data Circuit-terminating Equipment (DCE).
  • the communication interface of the data exchange interface technology standard may also include a communication interface under the RS-485 protocol, which is not limited herein.
  • the second memory 803 is configured to store a program, the data path acquisition signaling received by the second transceiver 802, and the data path request message sent by the transceiver.
  • the second memory 803 may include a volatile memory, such as a random-access memory (RAM); the second memory 803 may also include a non-volatile memory. For example, a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the second memory 803 may also include a combination of the above types of memories, which is not limited herein.
  • RAM random-access memory
  • non-volatile memory such as a non-volatile memory.
  • SSD solid-state drive
  • the second memory 803 may also include a combination of the above types of memories, which is not limited herein.
  • the second memory 803 is further configured to store program instructions, and the first processor 804 can invoke program instructions stored in the second memory 803.
  • the second processor 804 is configured to execute the program and generate the data path request message.
  • the second processor 804 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • CPU central processing unit
  • NP network processor
  • the second processor 804 can also further include a hardware chip.
  • the above hardware chip may be an application-specific integrated circuit (ASIC), programmable logic Programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (abbreviated as ROM), and a random access memory (Random Access).
  • ROM read-only memory
  • Random Access random access memory

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Abstract

本发明实施例公开了一种数据路径的确定方法以及控制器，用于为UE确定由于承载其数据流的目标数据路径。本发明实施例方法包括：控制装置接收核心网控制面发送的数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述数据路径请求消息由所述核心网控制面根据接收的数据路径获取信令生成；所述控制装置根据所述数据路径请求消息为所述UE确定所述目标数据路径，所述目标数据路径为可用的数据路径中的一条；所述控制装置向分类器发送第一指示消息，所述第一指示信息用于指示所述分类器配置所述目标数据路径承载所述UE的数据流。

Description

一种数据路径的确定方法以及控制装置 技术领域
本发明涉及通信领域，尤其涉及一种数据路径的确定方法以及控制器。
背景技术
随着通信科技的发展，手机用户可以通过手机接入网络，以便与他人取得联系或者浏览网页。手机接入网络需要借助通信基建设施等外部节点，如基站、各类网关以及核心网。外部节点之间互相传输数据组成数据路径以承载手机的数据流。
一般来说，手机开机后可以通过基站实现附着，或者当手机实现附着之后进行移动时切换基站，当下实现附着或者切换基站的方法是基于通用分组无线服务隧道协议(Global Packet Radio Service Tunnelling Protocol，GTP)的。GTP是和手机本身相关的，当手机在需要实现附着或者切换基站时，核心网需要通过GTP确定一条数据路径，该新的数据路径将以一系列链接的GTP形式被确立。
具体的，如下步骤，移动性管理实体(Mobility Management Entity，MME)在核心网网络中处在信令控制的核心节点，核心网网络用户数据通路(承载)的创建就是MME作为核心节点，控制手机、基站、服务网关、公共数据网网关等各节点为用户创建承载，当手机开机需要实现附着时：
当手机开机时：
1、用户设备(User Equipment，UE)向MME发起附着请求；2、MME获取服务网关(Serving GateWay，S-GW)列表；3、MME获取公用数据网网关(Public Data Network GateWay，P-GW)列表；4、MME选择一对S-GW和P-GW；5、MME向S-GW发起创建会话请求；6、S-GW向P-GW发送承载建立请求；7、P-GW向S-GW发送承载建立响应；8、S-GW向MME发送创建会话响应；9、MME向基站发送初始上下文设置请求；空口完成的用户面资源的分配，建立基站到终端的连接，此时，上游网元已经具备上行消息传送条件；10、基站向MME发送初始上下文设置应答；11、流程完毕后，所有下游网元已经具备下行消息传送条件；至此整个承载数据面路径建立完毕。
当手机移动时，基于X2接口从源基站切换至目标基站时：
1、源基站向目标基站发送请求切换消息；2、目标基站创建无线承载相关ID和X2转发隧道端点标识(Tunnel Endpoint Identifier，TEID)；3、源基站向UE发送切换指示消息切换命令；4、UE接入目标基站过程；5、目标基站向MME发送数据路径切换消息发起核心网侧路径切换过程；6、如果S-GW改变，就是到新的S-GW发起创建载体流程；如果S-GW没有改变，就是到原来的S-GW发起修改载体流程；7、新S-GW发起修改载体流程；8、MME删除源S-GW上的承载；至此，新的承载已建立，旧的承载已删除或修改，切换流程就完成了。
由于每一次手机进行附着业务或者切换基站时，上述相应的过程就需要再进行一次，显得数据路径的确定过程十分繁琐复杂，使得手机连接网络的速度得不到进一步提升，网络资源也造成一定的浪费。
发明内容
本申请实施例提供了一种数据路径的确定方法以及控制装置，用于为UE确定由于承载其数据流的目标数据路径。
有鉴于此，本发明实施例的第一方面提供一种数据路径的确定方法，包括：
控制装置接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成；该控制装置根据该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条；该控制装置向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
在本发明实施例中，数据路径控制单元包含在业务功能链系统(Service Function Chaining，SFC)，该SFC用于高效地为UE配置目标数据路径。该SFC包括数据路径控制单元以及多个NF。当SFC中的控制装置接收到数据路径请求时，可以返回一个目标数据路径。由于不再需要每次附着或者切换基站都使用GTP中的繁琐的步骤，使得终端接入核心网的速度，网络资源得到更充分的利用。
结合本发明实施例的第一方面，在本发明实施例的第一方面的第一种实现方式，包括：
该数据路径获取信令为附着请求消息或请求切换消息，该附着请求消息由该UE生成，该请求切换消息由该基站生成，该请求切换消息指示该UE从该源基站切换至目标基站。
结合本发明实施例的第一方面、第一方面的第一种实现方式，在本发明实施例的第一方面的第二种实现方式，包括：
该控制装置从该数据路径请求消息获取该UE的互联网协议地址(Internet Protocol，IP)，该UE的IP由该核心网控制面根据该附着请求消息从互联网协议地址分配实体(Internet Protocol Assignment Entity，IPAE)中获得。
在一些可行的实施例中，优选的，当核心网控制面获取该附着请求消息之后，可以为UE分配一个IP。具体的，核心网控制面根据该UE的附着请求消息生成一个IP请求，将该IP请求发送至IPAE，然后接收IPAE返回的作为该UE的IP，该IP用于在执行确定该目标数据路径时，可以作为该UE标识。需要说明的是，核心网控制面还可以获取该UE的签约信息，并以此作为确定哪条可用的数据路径作为目标数据路径的重要依据。在一些可行的实施例中，IPAE也可以集成在核心网控制面中，也可以单独作为一个网元，此处不作限定由于为该UE分配了IP，因此不再需要区分UE的GTP和IP，则执行业务时可以更方便。
结合本发明实施例的第一方面、第一方面的第一种实现方式，在本发明实施例的第一方面的第三种实现方式，包括：
该控制装置根据该数据路径请求消息向源出数据流量分类器(Classifier for outbound data traffic，C-out)发送缓存请求，该缓存请求用于指示该源C-out缓存来自入数据流量分类器(Classifier for inbound data traffic，C-in)的下行数据流，该源C-out用于与该源基站直接通信连接；该控制装置确定间接转发数据路径，该间接转发数据路径用于承载从该源C-out至目标C-out至该UE的该下行数据流，该目标C-out用于与该目标基站直接通信连接；该控制装置向该C-in发送第二指示消息，该C-in用于根据该第二指示信息绑定该下行数据流和该间接转发数据路径，以使得该间接转发数据路径承载该下行数据流；该控制装置向该核心网控制面发送间接转发确立信息，该间接转发确立信息用 于指示该核心网控制面执行该请求切换。
由于分类器可以成功的将数据流分类，并绑定该UE和相应的数据路径，避免了数据流的混乱，很好地执行本发明的方案。
本发明实施例第二方面提供了一种数据路径的确定方法，包括：
核心网控制面接收数据路径获取信令；该核心网控制面根据该数据路径获取信令向控制装置发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该控制装置用于根据该数据路径请求消息确定目标数据路径，该目标数据路径为可用的数据路径中的一条。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第一种实现方式，包括：
该数据路径请求消息是携带该UE的IP的。
结合本发明实施例的第二方面、第二方面的第一种实现方式，在本发明实施例的第二方面的第二种实现方式，包括：
该数据路径获取信令为附着请求消息或请求切换消息，该附着请求消息由该UE生成，该请求切换消息由该基站生成，该请求切换消息指示该UE从该源基站切换至目标基站。
无论是附着业务还是切换业务，都可以使用本发明的技术高效地为UE分配承载起数据流的目标数据路径。
结合本发明实施例的第二方面的第二种实施方式，在本发明实施例的第二方面的第三种实现方式，包括：
该核心网控制面根据该附着请求消息向IPAE发送IP请求；该核心网控制面接收该IPAE根据该IP请求返回的该UE的IP。
无论是附着业务还是切换业务，都可以使用本发明的技术高效地为UE分配承载起数据流的目标数据路径。
本发明实施例第三方面提供了一种数据路径的控制装置，包括：
第一接收模块，用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成；第一确定模块，用于根据该第一接收模块接收的该数据路径请求消息 为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条；第一发送模块，用于向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
由于不再需要每次附着或者切换基站都使用GTP中的繁琐的步骤，使得终端接入核心网的速度，网络资源得到更充分的利用。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第一种实现方式，包括：
该数据路径获取信令为附着请求消息或请求切换消息，该附着请求消息由该UE生成，该请求切换消息由该基站生成，该请求切换消息指示该UE从该源基站切换至目标基站。
无论是附着业务还是切换业务，都可以使用本发明的技术高效地为UE分配承载起数据流的目标数据路径。
结合本发明实施例的第三方面、第三方面的第一种实现方式，在本发明实施例的第三方面的第二种实现方式，包括：
获取模块，用于从该数据路径请求消息获取该UE的互联网协议地址IP，该UE的IP由该核心网控制面根据该附着请求消息从互联网协议地址分配实体IPAE中获得。
本发明实施例第四方面提供了一种数据路径管理单元，包括：
第二接收模块，用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成；第二确定模块，用于根据该第二接收模块接收的该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条；配置模块，用于配置模块，用于配置该目标数据路径承载该UE的数据流。
本发明实施例第五方面提供了一种核心网控制面，包括：
第三接收模块，用于接收数据路径获取信令；第二发送模块，用于根据该第三接收模块接收的该数据路径获取信令向控制装置发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该控制装置用于根据该数据路径请求消息绑定该UE和该目标数据路径，该目标数据路径为可用的数据路径中的一条。
结合本发明实施例的第五方面，在本发明实施例的第五方面的第一种实现方式，包括：
第三发送模块，用于根据该附着请求消息向IPAE发送IP请求；第四接收模块，用于接收该IPAE根据该第三发送模块发送的该IP请求返回的该UE的IP。
本发明实施例第六方面提供了一种控制装置，包括：
第一收发器、第一存储器、第一处理器以及第一总线；该第一收发器、该第一存储器以及该第一处理器通过该第一总线连接；该第一收发器用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成；该第一存储器用于存储程序、该第一收发器接收的该数据路径请求消息；该第一处理器用于根据该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条；该第一收发器还用于向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
本发明实施例第七方面提供了一种核心网控制面，包括：
第二收发器、第二存储器、第二处理器以及第二总线；该第二收发器、该第二存储器以及该第二处理器通过该第二总线连接；该第二收发器用于接收数据路径获取信令，向控制装置根据该数据路径获取信令发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该控制装置用于根据该数据路径请求消息绑定该UE和目标数据路径，该目标数据路径为可用的数据路径中的一条；该第二存储器用于存储程序、该第二收发器接收的该数据路径获取信令、该收发器发送的该数据路径请求消息；该第二处理器用于执行该程序、生成该数据路径请求消息。
本发明实施例提供的技术方案中，本发明实施例具有以下优点：
由于控制装置接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成，该控制装置根据该数据路径请求消息为该UE确定该目标数据路径，该目 标数据路径为可用的数据路径中的一条，该控制装置向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流，因此不再需要每次附着或者切换基站都使用GTP中的繁琐的步骤，使得终端接入核心网的速度，网络资源得到更充分的利用。
附图说明
图1a为本申请实施例中一种通信系统的一个框架示意图；
图1b为本申请实施例中一种数据路径的确定系统的一个框架示意图；
图2a为本申请实施例中一种数据路径的确定方法的一个实施例示意图；
图2b为本申请实施例中一种数据路径的确定方法的另一个实施例示意图；
图3a为本申请实施例中一种数据路径的确定方法的一个实施例示意图；
图3b为本申请实施例中一种数据路径的确定方法的另一个实施例示意图；
图4为本申请实施例中一种控制装置的一个实施例示意图；
图5为本申请实施例中一种数据路径控制单元的一个实施例示意图；
图6为本申请实施例中一种核心网控制面的一个实施例示意图；
图7为本申请实施例中一种控制装置的一个实施例示意图；
图8为本申请实施例中一种核心网控制面的一个实施例示意图。
具体实施方式
本发明实施例提供了一种数据路径的确定方法以及控制器，用于为UE确定由于承载其数据流的目标数据路径。
为了使本技术领域的人员更好地理解本发明实施例方案，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的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺 序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
如图1a所示，是一种通信系统。在本发明实施例中，本方案可以使用到如图1a所示的通信系统中。在该系统由核心网、多个基站以及与各个基站有通信连接的签约终端UE。在一些可行的实施例中，该系统中核心网可以接收基站发送的对UE的数据路径获取信令，该数据路径获取信令可以为UE发起的附着请求，也可以为基站发起的请求切换，此处不作限定。当核心网接收到数据路径获取信令时，即可为UE确定目标数据路径，以使得该UE的数据流可以被承载到该目标数据路径中。
需要特别说明的是，本发明实施例涉及的UE，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(RAN Radio Access Network)与一个或多个核心网进行通信，无线终端可以是移动UE，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant；缩写PDA)等设备。无线UE也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户设备(User Terminal)、终端设备、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。
以UE为手机为例，手机包括：射频(Radio Frequency，RF)电路、存储器、输入单元、显示单元、传感器、音频电路、无线保真(wireless fidelity，WiFi)模块、处理器、以及电源等部件。本领域技术人员可以理解，以上所述的手机结构并不构成对手机的限定，可以包括更多或更少的 部件，或者组合某些部件，或者不同的部件布置。
在本发明实施例中，具体的，可以通过如图1b所示的一种数据路径的确定系统来确定签约UE接入网络的数据路径，作为目标数据路径，以使得该UE的数据流会经过该目标数据路径。在一些可行的实施例中，核心网控制面、数据路径控制单元、网络功能(Network Function，NF)均为核心网的部分，其中核心网控制面为该核心网的核心网控制面，数据路径控制单元为该核心网的数据路径管理单元，核心网控制面为网络中的网络功能单元节点。在一些可行的实施例中的，具体的，当核心网控制面接收到数据路径获取信令时，可以向数据路径控制单元发送数据路径请求，以确定目标数据路径承载该UE的数据流。需要说明的是，目标数据路径是由多个NF组成的，UE通过该多个NF接入网络。在一些可行的实施例中，核心网控制面可以包括MME(moblility management entity)移动性管理实体，用于在用户附着或者切换时为用户请求IP和数据路径。
因此，本申请实施例一种数据路径的确定方法以及控制装置，由于控制装置接收核心网控制面发送的对UE的数据路径请求，该数据路径请求由该核心网控制面根据接收的数据路径获取信令生成，该控制装置为该UE确定目标数据路径，该目标数据路径包含于预先确定的可用的数据路径中，该控制装置向分类器发送第一指示消息，该分类器用于根据该第一指示信息绑定该UE和该目标数据路径，以使得该目标数据路径承载该UE的数据流，因此不再需要每次附着或者切换基站都使用GTP中的繁琐的步骤，使得终端接入核心网的速度，网络资源得到更充分的利用。
为便于理解，下面对本申请实施例中的具体流程进行描述，具体的，由于数据路径获取信令包括附着请求消息和请求切换消息，因此以下描述被分为两部分分别进行说明。
一、当数据路径获取信令为附着请求消息时。
如图2a所示，是一种数据路径的确定方法，该系统包括UE、核心网控制面、数据路径控制单元以及多个NF，其中数据路径控制单元包括控制装置、C-in(Classifier for inbound data traffic)入数据流量分离器和C-out(Classifier for inbound data traffic)入数据流量分类器，其中C-in和C-out统称为分类器，其中C-out用于接收将来自基站的上行数据，并绑定该上 行数据流被和相应的数据路径，使得该数据路径承载该上行数据流，C-in用于接收流入核心网的下行数据，并确保该下行数据被承载在相应的数据路径上。分类器用于确保目标数据路径承载特定的数据流。另外，一般来说，UE需要通过基站与核心网实现通信。
请参阅图2b，本申请实施例中一种数据路径的确定方法的一个实施例包括：
201、核心网控制面接收附着请求消息。
在一些可行的实施例中，当UE开机时，或者其他从断网状态(如飞行模式)需要进入联网状态的情况，此处不作限定，会发起附着请求，则UE会寻找相应的基站，向该基站发送附着请求消息。当基站接收到该附着请求消息后，会为UE请求一个接入核心网的目标数据路径，即向核心网中的核心网控制面转发该附着请求消息，以使得核心网可以为UE绑定目标数据路径以承载该UE的数据流。需要说明的是，一般来说，在现代通信中，UE是不会直接与核心网通信的，一般需要先连接基站，通过基站与核心网以及网络进行通信连接。
需要说明的是，在一些可行的实施例中，当核心网控制面接收该附着请求消息时，需要对该UE进行鉴权、位置更新、准入控制等相关处理，则会向HSS(Home Subscriber Server归属用户服务器)发起对UE的安全、鉴权、位置更新等相关的请求，具体过程为公知常识，此处不作赘述。在一些可行的实施例中，归属用户服务器(Home Subscriber Server；缩写HSS)也可以集成在核心网控制面中，也可以单独作为一个网元，此处不作限定。
202、核心网控制面根据该附着请求消息从IPAE中获得该UE的IP。
在一些可行的实施例中，优选的，当核心网控制面获取该附着请求消息之后，可以为UE分配一个IP。具体的，核心网控制面根据该UE的附着请求消息生成一个IP请求，将该IP请求发送至IPAE，然后接收IPAE返回的作为该UE的IP，该IP用于在执行确定该目标数据路径时，可以作为该UE标识。需要说明的是，核心网控制面还可以获取该UE的签约信息，并以此作为确定哪条可用的数据路径作为目标数据路径的重要依据。在一些可行的实施例中，IPAE也可以集成在核心网控制面中，也可以单独作为一个网元，此处不作限定。
203、核心网控制面向控制装置发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径。
在一些可行的实施例中，当核心网控制面获取了该UE的IP后，可以向数据路径管理单元中的控制装置发送数据路径请求消息，该数据路径请求消息携带该UE的IP，由于该UE的IP作为该UE的标识，则数据路径控制单元可以为该IP确定目标数据路径。
需要说明的是，数据路径控制单元可以包括控制装置和分类器，具体的，核心网控制面将该数据路径请求发送至控制装置，以使得控制装置确定目标数据路径。在本发明实施例中，数据路径控制单元包含在业务功能链系统(Service Function Chaining，SFC)，该SFC用于高效地为UE配置目标数据路径。该SFC包括数据路径控制单元以及多个NF。当SFC中的控制装置接收到数据路径请求时，可以返回一个目标数据路径。
204、该控制装置根据该数据路径请求消息为该UE确定目标数据路径，该目标数据路径为可用的数据路径中的一条。
当控制装置接收到该数据路径请求消息后，可以从预先确定的数据路径中选择一条作为目标数据路径，该目标数据路径用于承载该UE的数据流。
需要说明的是，在一些可行的实施例中，控制装置可以通过部署和配置确定多条可用的数据路径。
具体的部署过程为，控制装置预先制定了NF的转发规则，该转发规则规定了每个NF的承载的特定的数据流的转发方向，如当第一NF接收第一数据流时，根据转发规则指示该第一数据流应该转发到第二NF，则第一NF就会把第一数据流转发至第二NF。该转发规则会发送给各个NF，多个NF确定了自身的转发规则后，会形成多条的可用的数据路径。如第一数据路径可以由第一NF，第二NF，第三NF……第i NF构成，那当第一NF接收到第一数据流时，会经过第一NF，第二NF，第三NF……第i NF的数据路径，若第一数据流指的是UE的数据流，则UE的数据流则可以称为被承载在该数据路径中。需要说明的是，同一个NF对不同的数据流可以有不同的转发规则，此处不作限定。
在一些可行的实施例中，具体的配置过程为，控制装置将各个可用的 数据路径中的每一个与一个网络服务报头(Network Service Header，NSH)进行绑定，则每个可用的数据路径都有相应的NSH作为其标识。
部署和配置过程是预先完成的，则当控制装置为UE分配一个目标数据路径的时候，也会将UE与一个NSH进行绑定，则与同一个NSH实现绑定的UE和数据路径实现绑定，则称该数据路径为目标数据路径，该目标数据路径承载该UE的数据流。
另外，需要说明的是，目标数据路径可以分为目标上行数据路径和下行数据路径，目标上行数据路径和下行数据路径可以由同样的NF构成，也可以由不同的NF构成，此处不作限定。
需要说明的是，在一些可行的实施例中，需要确定该UE是否为签约用户，若该UE为签约用户，则不再需要在目标数据路径中的各个节点对其进行鉴权或者流量控制，以使得该UE可以直接使用该目标数据路径，因此UE使用SFC系统来确定承载数据流的目标数据路径的方法十分高效。
205、该控制装置向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
在一些可行的实施例中，当控制装置确定了目标数据路径后，可以将该目标数据路径发送给分类器。具体的，可以将目标数据路径分为两部分，目标上行数据路径和目标下行数据路径，分别发送给C-out和C-in，C-out用于确保目标数据路径承载来自于UE通过基站的上行数据流，C-in用于确保目标数据路径承载进入核心网到UE的下行数据流。
需要说明的是，对于传送给C-in的信息，该信息包含下行数据流的类别5元组(源IP，目标IP，协议号，源端口，目标端口)以及下行数据流到NSH的映射规则。对于传送给C-out的信息，该信息也可能包含上行数据流的类别5元组或者第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)基于类别的特有标识符，如国际移动用户标识码(，IMSI)或暂时国际移动用户标识码(Temporary IMSI，T-IMSI)以及下行数据流到NSH的映射规则。
需要说明的是，在一些可行的实施例中，数据路径管理单元可以作为一个设备，即控制装置与分类器作为该数据路径管理单元内部的一部分； 数据路径管理单元也可以作为一个系统，包括控制装置与分类器的系统，此处不作限定。
到此，则UE的附着请求消息中的请求已经得到执行，即UE可以有确定的目标数据路径接入网络。需要说明的是，当UE完成附着之后，控制装置可以向核心网控制面发送应答消息，以指示该附着业务已经完成，核心网控制面则会转发该应答消息给基站，基站即可为UE分配空口资源接入网络，具体过程为公知常识，此处不做赘述。
二、当数据路径获取信令为基站发起的请求切换时。
如图3a所示，为一种数据路径的确定方法的一个实施例示意图，即当数据路径获取信令为请求切换消息时。UE从源基站覆盖区向另外目标基站覆盖区移动时，源基站的信号会逐渐变弱，而目标基站的信号会逐渐增强。只有终端才知道自己当前所在位置各小区信号的好坏。终端测量当前所在小区及邻区的信号强度，上报给源基站，源基站再根据终端上报的当前小区、可供选择小区的信号强度决定是否发起切换、向哪个小区切换。当源基站确定目标基站为该UE服务时，该源基站即可生成请求切换消息，该请求切换消息指示该UE从源基站切换至目标基站。需要说明的是，基站生成请求切换时，UE是已经通过源基站实现附着了的，即该UE已经通过源基站连接核心网以及已经有一条确定的原来的目标数据路径承载该UE的数据流，此时核心网需要为该UE生成一条UE通过目标基站连接核心网的新的目标数据路径。
请参阅图3b，本申请实施例中一种数据路径的确定方法的另一个实施例包括：
301、核心网控制面接收请求切换消息。
在一些可行的实施例中，UE是通过无线的方式与源基站通信连接的。在核心网中有许多基站，当UE移动至目标基站的服务范围时，源基站则会发起对UE的请求切换。需要说的是，一般来说，一个C-out对应一个基站，在本发明实施例中，源C-out对应源基站，目标C-out对应目标基站，即源C-out接收来自源基站的上行数据流，即目标C-out接收来自目标基站的上行数据流。
另外，需要说明的是，由于UE是已经通过源基站实现附着了的，因 此UE是已经分配了一条目标数据路径，用于承载该UE的数据流的。而且该UE也已经有了一个确定的IP，当UE切换至目标基站时，需要为UE分配一条新的目标数据路径，即为该UE的IP确定一条新的目标数据路径，并切断停止原来的目标数据路径与该UE绑定关系，即停止该原来的目标数据路径承载该UE的数据流。
302、核心网控制面向控制装置发送间接转发数据路径请求消息。
当核心网控制面接收到源基站发起的请求切换时，由于需要一些时间去分配一条新的目标数据路径，因此在这个时间差内，为了保持数据传输的连续性，源C-out可以通过间接转发数据路径将接收到的下行数据流转发至目标C-out，因此需要一条间接转发数据路径，该间接转发数据路径用于将源C-out的数据流传送到目标C-out中。
303、控制装置向源C-out发送缓存请求。
当控制装置接收间接转发数据路径请求消息后，则向源C-out发送缓存请求，以使得源C-out缓存来自C-in的下行数据流，以备将该下行数据流通过间接转发数据路径转发至目标C-out。具体的，源C-out可以先缓存接收的来自C-in的下行数据流，再将该下行数据流通过间接转发数据路径发送到目标C-out，以至于当UE切换至目标基站时，接收该C-out的该下行数据流。
304、控制装置确定间接转发数据路径。
在一些可行的实施例中，控制装置可以确定间接转发数据路径，以使得源C-out缓存的下行数据流可以通过以下路径到达目标C-out：源C-out->间接转发数据路径->目标C-out。同样的，控制装置会从预先确定的可用的数据路径中确定一条作为间接转发数据路径。间接转发数据路径是由多个NF构成的，控制装置实现确定了转发规则发送给多个NF，以使得多个NF形成一个数据路径。
305、控制装置向源C-out和目标C-out发送第二指示消息。
当确定了间接转发数据路径后，控制装置可以向源C-out和目标C-out发送包含该间接转发数据路径的第二指示消息，以指示源C-out和目标C-out绑定该间接转发数据路径和该下行数据流，以使得该间接转发数据路径承载从源C-out到目标C-out该下行数据流，以使得目标C-out可以在切 换完成后，将该下行数据流通过目标基站发送到该UE。
306、控制装置向核心网控制面发送间接转发确立信息。
当控制装置发送了第二指示消息后，即可向核心网控制面发送间接转发确立信息，使得核心网控制面可以为UE请求新的目标数据路径。
307、核心网控制面向控制装置发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径。
308、该控制装置根据该数据路径请求消息为该UE确定目标数据路径，该目标数据路径为可用的数据路径中的一条。
309、该控制装置向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
本发明实施例中步骤307-步骤309与上述步骤203-步骤205相同，此处不再赘述。
另外，需要说明的是，当完成切换后，可以在HSS中的跟踪区中更新UE的位置，即向HSS指示该UE与目标基站连接，同时删除源基站中UE的信息，此处不再赘述。
请参阅图4，本申请实施例中一种控制装置400的一个实施例包括：
获取模块401，用于从该数据路径请求消息获取该UE的互联网协议地址IP，该UE的IP由该核心网控制面根据该附着请求消息从互联网协议地址分配实体IPAE中获得。
第一接收模块402，用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成。
第一确定模块403，用于根据该第一接收模块402接收的该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条。
第一发送模块404，用于向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该第一确定模块403确定的该目标数据路径承载该UE的数据流。
请参阅图5，本申请实施例中一种数据路径控制单元500的一个实施 例包括：
第二接收模块501，用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成。
第二确定模块502，用于根据该第二接收模块501接收的该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条。
配置模块503，用于配置该第二确定模块502确定的该目标数据路径承载该UE的数据流。
请参阅图6，本申请实施例中一种核心网控制面600的一个实施例包括：
第三发送模块601，用于根据该附着请求消息向IPAE发送IP请求。
第四接收模块602，用于接收该IPAE根据该第三发送模块601发送的该IP请求返回的该UE的IP。
第三接收模块603，用于接收数据路径获取信令。
第二发送模块604，用于根据该第三接收模块603接收的该数据路径获取信令向控制装置发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该控制装置用于根据该数据路径请求消息配置该目标数据路径承载该UE的数据流，该目标数据路径为可用的数据路径中的一条。
请参阅图7，本申请实施例中一种控制装置700包括：
第一收发器702、第一存储器703、第一处理器704以及第一总线701。
该第一收发器702、该第一存储器703以及该第一处理器704通过该第一总线701连接。
该第一收发器702用于接收核心网控制面发送的数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该数据路径请求消息由该核心网控制面根据接收的数据路径获取信令生成。
该第一收发器702可以包括第一处理器704和标准通信子系统之间的通信接口(英文communication interface)。
该第一收发器702还可以进一步包括EIA-RS-232C标准下的通信接口，即数据终端设备(Data Terminal Equipment，DTE)和数据通讯设备(Data Circuit-terminating Equipment，DCE)之间串行二进制数据交换接口技术标准的通信接口，也可以包括RS-485协议下的通信接口，此处不作限定。
该第一存储器703用于存储程序、该第一收发器702接收的该数据路径请求消息。
该第一存储器703可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；该第一存储器703也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；该第一存储器703还可以包括上述种类的存储器的组合，此处不作限定。
可选地，该第一存储器703还可以用于存储程序指令，该第一处理器704可以调用该第一存储器703中存储的程序指令。
该第一处理器704用于根据该数据路径请求消息为该UE确定该目标数据路径，该目标数据路径为可用的数据路径中的一条。
该第一处理器704可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
该第一处理器704还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)或其任意组合。
该第一收发器702还用于向分类器发送第一指示消息，该第一指示信息用于指示该分类器配置该目标数据路径承载该UE的数据流。
请参阅图8，本申请实施例中一种核心网控制面800，包括：
第二收发器802、第二存储器803、第二处理器804以及第二总线801。
该第二收发器802、该第二存储器803以及该第二处理器804通过该第二总线801连接。
该第二收发器802用于接收数据路径获取信令，向控制装置根据该数据路径获取信令发送数据路径请求消息，该数据路径请求消息用于请求目标数据路径，该目标数据路径用于承载签约终端UE的数据流，该控制装置用于根据该数据路径请求消息确定目标数据路径，该目标数据路径为可用的数据路径中的一条。
该第二收发器802可以包括第二处理器804和标准通信子系统之间的通信接口(communication interface)。
该第二收发器802还可以进一步包括EIA-RS-232C标准下的通信接口，即数据终端设备(Data Terminal Equipment，DTE)和数据通讯设备(Data Circuit-terminating Equipment，DCE)之间串行二进制数据交换接口技术标准的通信接口，也可以包括RS-485协议下的通信接口，此处不作限定。
该第二存储器803用于存储程序、该第二收发器802接收的该数据路径获取信令、该收发器发送的该数据路径请求消息。
该第二存储器803可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；该第二存储器803也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；该第二存储器803还可以包括上述种类的存储器的组合，此处不作限定。
可选地，该第二存储器803还可以用于存储程序指令，该第一处理器804可以调用该第二存储器803中存储的程序指令。
该第二处理器804用于执行该程序、生成该数据路径请求消息。
该第二处理器804可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
该第二处理器804还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑 器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)或其任意组合。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，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，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，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接口，装置或单元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单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者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单元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单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，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)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory；缩写ROM)、随机存取存储器(Random Access  Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (16)

  1. 一种数据路径的确定方法，其特征在于，包括：
    控制装置接收核心网控制面发送的数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约用户设备UE的数据流，所述数据路径请求消息由所述核心网控制面根据接收的数据路径获取信令生成；
    所述控制装置根据所述数据路径请求消息为所述UE确定所述目标数据路径，所述目标数据路径为可用的数据路径中的一条；
    所述控制装置向分类器发送第一指示消息，所述第一指示信息用于指示所述分类器配置所述目标数据路径承载所述UE的数据流。
  2. 根据权利要求1所述方法，其特征在于，所述数据路径获取信令为附着请求消息或请求切换消息，所述附着请求消息由所述UE生成，所述请求切换消息由所述基站生成，所述请求切换消息指示所述UE从所述源基站切换至目标基站。
  3. 根据权利要求1或2所述方法，其特征在于，若所述数据路径获取信令为所述附着请求消息，所述控制装置根据所述数据路径请求消息为所述UE确定所述目标数据路径之前，还包括：
    所述控制装置从所述数据路径请求消息获取所述UE的互联网协议地址IP，所述UE的IP由所述核心网控制面根据所述附着请求消息从互联网协议地址分配实体IPAE中获得。
  4. 根据权利要求1或2所述方法，其特征在于，所述分类器包括出数据流量分类器C-out和入数据流量分类器C-in，若所述数据路径获取信令为所述源基站发起的请求切换，所述控制装置根据所述数据路径请求消息为所述UE确定目标数据路径之前，还包括：
    所述控制装置根据所述数据路径请求消息向源C-out发送缓存请求，所述缓存请求用于指示所述源C-out缓存来自C-in的下行数据流，所述源C-out用于与所述源基站直接通信连接；
    所述控制装置确定间接转发数据路径，所述间接转发数据路径用于承载从所述源C-out至目标C-out至所述UE的所述下行数据流，所述目标C-out用于与所述目标基站直接通信连接；
    所述控制装置向所述C-in发送第二指示消息，所述C-in用于根据所述第二指示信息绑定所述下行数据流和所述间接转发数据路径，以使得所述间接转发数据路径承载所述下行数据流；
    所述控制装置向所述核心网控制面发送间接转发确立信息，所述间接转发确立信息用于指示所述核心网控制面执行所述请求切换。
  5. 一种数据路径的确定方法，其特征在于，包括：
    核心网控制面接收数据路径获取信令；
    所述核心网控制面根据所述数据路径获取信令向控制装置发送数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述控制装置用于根据所述数据路径请求消息确定目标数据路径，所述目标数据路径为可用的数据路径中的一条。
  6. 根据权利要求5所述方法，其特征在于，所述数据路径请求消息是携带所述UE的IP的。
  7. 根据权利要求5或6所述方法，其特征在于，所述数据路径获取信令为附着请求消息或请求切换消息，所述附着请求消息由所述UE生成，所述请求切换消息由所述基站生成，所述请求切换消息指示所述UE从所述源基站切换至目标基站。
  8. 根据权利要求7所述方法，其特征在于，若所述数据路径获取信令为所述附着请求消息，所述核心网控制面向控制装置根据所述数据路径获取信令发送数据路径请求消息之前，还包括：
    所述核心网控制面根据所述附着请求消息向IPAE发送IP请求；
    所述核心网控制面接收所述IPAE根据所述IP请求返回的所述UE的IP。
  9. 一种控制装置，其特征在于，包括：
    第一接收模块，用于接收核心网控制面发送的数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述数据路径请求消息由所述核心网控制面根据接收的数据路径获取信令生成；
    第一确定模块，用于根据所述第一接收模块接收的所述数据路径请求消息为所述UE确定所述目标数据路径，所述目标数据路径为可用的数据路径中的一条；
    第一发送模块，用于向分类器发送第一指示消息，所述第一指示信息用于指示所述分类器配置所述目标数据路径承载所述UE的数据流。
  10. 根据权利要求9所述控制装置，其特征在于，所述数据路径获取信令为附着请求消息或请求切换消息，所述附着请求消息由所述UE生成，所述请求切换消息由所述基站生成，所述请求切换消息指示所述UE从所述源基站切换至目标基站。
  11. 根据权利要求9或10所述控制装置，其特征在于，若所述数据路径获取信令为所述附着请求消息，所述控制装置还包括：
    获取模块，用于从所述数据路径请求消息获取所述UE的互联网协议地址IP，所述UE的IP由所述核心网控制面根据所述附着请求消息从互联网协议地址分配实体IPAE中获得。
  12. 一种数据路径管理单元，其特征在于，包括：
    第二接收模块，用于接收核心网控制面发送的数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载UE的数据流，所述数据路径请求消息由所述核心网控制面根据接收的数据路径获取信令生成；
    第二确定模块，用于根据所述第二接收模块接收的所述数据路径请求消息为所述UE确定所述目标数据路径，所述目标数据路径为可用的数据路径中的一条；
    配置模块，用于配置所述目标数据路径承载所述UE的数据流。
  13. 一种核心网控制面，其特征在于，包括：
    第三接收模块，用于接收数据路径获取信令；
    第二发送模块，用于根据所述第三接收模块接收的所述数据路径获取信令向控制装置发送数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述控制装置用于根据所述数据路径请求消息确定目标数据路径，所述目标数据路径为可用的数据路径中的一条。
  14. 根据权利要求13所述核心网控制面，其特征在于，若所述数据路径获取信令为所述附着请求消息，所述核心网控制面还包括：
    第三发送模块，用于根据所述附着请求消息向IPAE发送IP请求；
    第四接收模块，用于接收所述IPAE根据所述第三发送模块发送的所述IP请求返回的所述UE的IP。
  15. 一种控制装置，其特征在于，包括：
    第一收发器、第一存储器、第一处理器以及第一总线；
    所述第一收发器、所述第一存储器以及所述第一处理器通过所述第一总线连接；
    所述第一收发器用于接收核心网控制面发送的数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述数据路径请求消息由所述核心网控制面根据接收的数据路径获取信令生成；
    所述第一存储器用于存储程序、所述第一收发器接收的所述数据路径请求消息；
    所述第一处理器用于根据所述数据路径请求消息为所述UE确定所述目标数据路径，所述目标数据路径为可用的数据路径中的一条；
    所述第一收发器还用于向分类器发送第一指示消息，所述第一指示信息用于指示所述分类器配置所述目标数据路径承载所述UE的数据流。
  16. 一种核心网控制面，其特征在于，包括：
    第二收发器、第二存储器、第二处理器以及第二总线；
    所述第二收发器、所述第二存储器以及所述第二处理器通过所述第二总线连接；
    所述第二收发器用于接收数据路径获取信令，向控制装置根据所述数据路径获取信令发送数据路径请求消息，所述数据路径请求消息用于请求目标数据路径，所述目标数据路径用于承载签约终端UE的数据流，所述控制装置用于根据所述数据路径请求消息确定目标数据路径，所述目标数据路径为可用的数据路径中的一条；
    所述第二存储器用于存储程序、所述第二收发器接收的所述数据路径获取信令、所述收发器发送的所述数据路径请求消息；
    所述第二处理器用于执行所述程序、生成所述数据路径请求消息。
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