WO2017133477A1 - 业务流传输方法、装置及系统 - Google Patents

业务流传输方法、装置及系统 Download PDF

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Publication number
WO2017133477A1
WO2017133477A1 PCT/CN2017/071732 CN2017071732W WO2017133477A1 WO 2017133477 A1 WO2017133477 A1 WO 2017133477A1 CN 2017071732 W CN2017071732 W CN 2017071732W WO 2017133477 A1 WO2017133477 A1 WO 2017133477A1
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Prior art keywords
service flow
access
network
access mode
qos
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PCT/CN2017/071732
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English (en)
French (fr)
Inventor
赵洁
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华为技术有限公司
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Publication of WO2017133477A1 publication Critical patent/WO2017133477A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a service stream transmission method, apparatus, and system.
  • NFV Network Function Virtualization
  • SDN Software Defined Network
  • NFV technology refers to the realization of network functions that are originally implemented by hardware through software using versatile hardware such as x86 and virtualization technology to realize network function virtualization and reduce hardware costs.
  • a network entity such as a Mobility Management Entity (MME), a Packet Data Network Gateway (PGW), and a Policy and Charging Rules Function (PCRF) unit in a traditional network.
  • MME Mobility Management Entity
  • PGW Packet Data Network Gateway
  • PCRF Policy and Charging Rules Function
  • the functions are implemented in the 5G network through software modules, which can be called the core network control plane function module, the core network gateway module, and the service flow quality of service (QoS) policy control function module.
  • SDN technology is an implementation method of network virtualization. By using OpenFlow technology, the control plane of the network device is separated from the data plane, thereby implementing flexible control of network traffic.
  • the SDN controller is an application in the SDN, which can implement control functions such as protocol interaction and flow control in a gateway (Gateway, GW) in a traditional network, and separate the control function of the gateway from the data forwarding function.
  • the network bandwidth of the 5G network is greatly improved, and the transmission bandwidth is also large.
  • the prior art provides a Multipath Transmission Control Protocol (MPTCP), which can improve the transmission behavior of the TCP protocol through multi-stream concurrent transmission, and adapts to The requirement of large transmission bandwidth improves the adaptability of the network transmission environment.
  • MPTCP Multipath Transmission Control Protocol
  • the MPTCP layer is a layer of transport layer added between the original application layer and the transport layer.
  • the original TCP layer acts only on the substream, so that the communication parties see the transport layer from the application layer. Still single channel communication. As shown in FIG.
  • the sender A has two communication addresses A1 and A2; the receiver B has two communication addresses B1 and B2. Then, the communication parties A and B respectively establish an initial connection through the 3-way handshake using the addresses A1 and B1, and negotiate whether to adopt MPTCP in the process; if MPTCP is supported, then A and B complete the initial connection, then an A1 is established.
  • the sender A will also inform the receiver B of other IP addresses it has; any one of A and B can use a pair of currently unused addresses to create a new substream, thereby implementing MPTCP, for example, as shown in FIG.
  • a communication link between A2 and B2 established between A and B is made.
  • the MPTCP protocol is used for traffic transmission to improve the transmission bandwidth. Whether the sub-flow needs to be established is determined by the sender and the receiver, and the sender and the receiver cannot sense the current network status. When the current network condition is poor, multiple sub-streams are still established through the current network for data transmission, which intensifies the network load and leads to low efficiency of service flow transmission.
  • the invention provides a service stream transmission method, device and system, which solve the problem that the service stream transmission cannot be performed according to the network state when the service stream is transmitted by using the MPTCP protocol in the prior art.
  • user equipment can access the network through more and more access methods. More commonly, user equipment can pass WIreless-Fidelity (Wi-Fi), radio access network (Radio Access Network, RAN). If the access mode is connected to the network, it is not excluded in the future that the user equipment can access the network through other means.
  • Wi-Fi WIreless-Fidelity
  • RAN Radio Access Network
  • the service flow transmission process there is an application scenario in which the user equipment accesses the network by using the first access mode and the second access mode, and the service flow is the access corresponding to the first access mode.
  • the network transmits or initiates the established service flow.
  • the embodiment of the present invention provides a service flow transmission method, which is applied to the application scenario described in the foregoing, where the method includes: acquiring, by the access network corresponding to the first access mode, whether the service flow is transmitted. a determination result of the QoS requirement of the service quality corresponding to the service flow; when the result of the determination is that the service flow corresponding to the access network corresponding to the first access mode cannot meet the QoS requirement, determine The QoS policy of the service flow is used to indicate that the service flow is transmitted by the access network corresponding to the first access mode and the second access mode, respectively.
  • the executive body of the above solution should be understood as any hardware device or software module capable of executing the above method flow.
  • any hardware device or software module capable of executing the above method flow is uniformly described as a service flow QoS policy making device in the embodiment of the present invention.
  • the name of the device using the service flow QoS policy does not limit the execution subject of the embodiment of the present invention.
  • the service flow QoS policy making device may be a PCRF, and in a 5G network adopting NFV technology, it is a software module for determining a QoS policy of a service flow on a general-purpose device.
  • the user equipment accesses the network through at least two access modes, and only the access service corresponding to the access mode transmits the existing service flow or establishes a new service flow, which cannot meet the QoS requirement of the service flow.
  • the QoS policy for indicating the traffic flow of the access network corresponding to the two access modes is determined.
  • the service flow transmission method provided by the present invention is in a poor condition in the current network (the access network corresponding to the first access mode) and cannot meet the QoS requirements of the service flow.
  • the QoS policy of the service flow is determined, so that the service flow can be simultaneously transmitted in parallel to the access network corresponding to the two access modes according to the network condition, thereby reducing the network load of the current network, thereby improving the efficiency of the service flow transmission.
  • the service flow QoS policy-making device can obtain, by using the following three implementation manners, whether the access network corresponding to the first access mode transmits the service flow to meet the service flow. The judgment result of the corresponding QoS requirement.
  • the first implementation manner is: the service flow QoS policy making device receives the QoS requirement corresponding to the service flow and the network state information of the access network corresponding to the first access mode; and according to the network state information and the Determining the QoS requirement, determining whether the service network corresponding to the first access mode transmits the service flow can satisfy the QoS requirement, and obtains a determination result.
  • the service flow QoS policy making device obtains the QoS requirement corresponding to the service flow from the other device and the network state information of the access network corresponding to the first access mode, and then performs the judgment by itself to obtain the determination result.
  • the second implementation manner is: the service flow QoS policy making device receives the application function device or the network monitoring device sends The access network corresponding to the first access mode transmits whether the service flow can satisfy the determination result of the QoS requirement corresponding to the service flow.
  • the service flow QoS policy making device obtains the final judgment result from the application function device or the network monitoring device, which can reduce the load of the service flow QoS policy making device.
  • the third implementation manner is: the service flow QoS policy making device receives the QoS requirement corresponding to the service flow sent by the application function device; sends the QoS requirement to the core network service flow transmission control device; and receives the core network service flow transmission
  • the access network corresponding to the first access mode sent by the control device transmits whether the service flow can satisfy the determination result of the QoS requirement corresponding to the service flow.
  • the service flow QoS policy-making device obtains the QoS requirement corresponding to the service flow from the application function device, and then forwards the QoS request to the core network service flow transmission control device, and the core network service flow transmission control device determines the result, and then determines the result.
  • the device is sent to the service flow QoS policy formulation device, which can reduce the load of the service flow QoS policy formulation device.
  • the method includes: the service flow QoS policy-making device acquires network state information of the access network corresponding to each access mode; and the network of the access network corresponding to each access mode The status information is used to determine the priority of each access mode; the first access mode with the priority greater than the preset threshold and the access network corresponding to the second access mode are determined as the access network for transmitting the service flow. .
  • the service flow QoS policy making device selects two access networks with better network status from the three or more access modes.
  • the method can be used for transmitting the service flow, and can effectively utilize an access network with a better network state for data transmission, thereby improving efficiency in a service flow transmission process.
  • the QoS policy determined by the service flow QoS policy-making device is further used to indicate that the service is transmitted by using an access network corresponding to the first access mode and the second access mode, respectively.
  • the transmission bandwidth of the stream is further used to indicate that the service is transmitted by using an access network corresponding to the first access mode and the second access mode, respectively.
  • the process of determining the transmission bandwidth corresponding to the first access mode and the second access mode, respectively is specifically required to obtain the first At least one link parameter of the access network corresponding to the access mode and the second access mode; determining, according to the preset weight of each link parameter, the transmission of the access network corresponding to the first access mode and the second access mode a bandwidth allocation ratio; determining, according to the transmission bandwidth allocation ratio, a transmission bandwidth of the access network corresponding to the first access mode and the second access mode, respectively.
  • the transmission bandwidth is allocated according to the link status of the access network corresponding to the two access modes, so that the access network with better link status transmits more data, and the network transmission bandwidth can be improved.
  • the method further includes: the service flow QoS policy making device sending the QoS policy to the core network service flow transmission control device, In order to facilitate the core network traffic flow control device to determine a routing policy according to the QoS policy.
  • the core network service flow transmission control device determines the routing policy according to the QoS policy, so that the user equipment and the gateway device perform data forwarding according to the routing policy in the subsequent data transmission process.
  • the core network service flow transmission control device may be a core network control plane function device, and after it completes the routing policy, it is forwarded to the core network gateway device or directly sent through the SDN controller (if the SDN controller exists in the network)
  • the core network gateway device is sent to the user equipment by the core network gateway device, so that in the subsequent service flow transmission process, the data packet can be sent according to the new routing policy.
  • the core network service flow transmission control device may also be an SDN controller. After the routing policy is formulated, the SDN controller sends the routing policy to the core network gateway device, and the core network gateway device sends the message to the user equipment.
  • the core network traffic flow control device may also include control The core network gateway device of the surface function, after the core network gateway device formulates the routing policy, saves it locally and sends the routing policy to the user equipment.
  • the core network control plane function device is a Mobility Management Entity (MME); and the core network gateway device is a packet data network gateway (Packet). Data Network GateWay, PGW); if SDN technology is applied in the 4G network, the core network SDN controller is an SDN controller in the 4G network.
  • the core network control plane function device is a core network control plane function module; and the core network gateway device is a core network gateway module.
  • the core network SDN controller is an SDN controller in the 5G network.
  • an embodiment of the present invention provides a service flow transmission apparatus, where the apparatus is applied to a user equipment to access a network by using at least a first access mode and a second access mode, and the service flow is through the first connection.
  • the device includes: an acquiring unit, configured to acquire, by the access network corresponding to the first access mode, whether the service flow can satisfy the a determining result of the quality of service QoS requirement corresponding to the service flow; the processing unit, configured to: when the determining result is that the service flow corresponding to the access network corresponding to the first access mode cannot meet the QoS requirement, Determining a QoS policy of the service flow, where the QoS policy is used to indicate that the service flow is transmitted by using an access network corresponding to the first access mode and the second access mode, respectively.
  • the acquiring unit is configured to receive a QoS requirement corresponding to the service flow and a network state of an access network corresponding to the first access mode. And determining, according to the network status information and the QoS requirement, whether the service network corresponding to the first access mode transmits the service flow can meet the QoS requirement, and obtains a determination result.
  • the acquiring unit is configured to receive, by the application function device or the network access device, the access network corresponding to the first access mode, Whether the service flow can satisfy the judgment result of the QoS requirement corresponding to the service flow.
  • the acquiring unit is configured to receive a QoS requirement corresponding to the service flow sent by the application function device, and send the control device to the core network service flow transmission control device. Determining the QoS requirement; receiving, by the core network service flow transmission control device, the access network corresponding to the first access mode, whether the service flow can satisfy the QoS requirement of the service flow.
  • the processing unit is specifically configured to be used in If the user equipment accesses the network by using at least three access modes including the first access mode and the second access mode, acquiring network state information of the access network corresponding to each access mode; Determining the priority of each access mode by using the network state information of the access network corresponding to the access mode; determining the first access mode with the priority greater than the preset threshold and the access network corresponding to the second access mode as An access network for transmitting the service flow.
  • the processing unit determines The QoS policy is further configured to indicate a transmission bandwidth when the service flow is transmitted by the access network corresponding to the first access mode and the second access mode, respectively.
  • the processing unit is further configured to obtain an access network corresponding to the first access mode and the second access mode, respectively. At least one link parameter; determining, according to a preset weight of each link parameter, a transmission bandwidth allocation of the access network corresponding to the first access mode and the second access mode The ratio of the transmission bandwidth of the access network corresponding to the first access mode and the second access mode is determined according to the transmission bandwidth allocation ratio.
  • the processing unit is further configured to send the QoS policy to a core network service flow control device, so that the core network service flow control device determines a routing policy according to the QoS policy.
  • the embodiment of the present invention provides a service flow transmission system, where the user equipment accesses the network by using at least the first access mode and the second access mode, and the service flow is the first access mode.
  • the system includes: a service flow QoS policy formulation device and a core network service flow transmission control device, where:
  • the service flow QoS policy-making device is configured to obtain, by the access network corresponding to the first access mode, whether the service flow can satisfy the QoS requirement corresponding to the service flow; when the judgment result is And determining, by the access network corresponding to the first access mode, that the service flow cannot meet the QoS requirement, determining a QoS policy of the service flow, where the QoS policy is used to indicate that the first access mode is
  • the access network corresponding to the second access mode transmits the service flow; the core network service flow transmission control device sends the QoS policy; and the core network service flow transmission control device is configured to receive the QoS policy and A routing policy is formulated according to the QoS policy.
  • the system further includes a core network software definition network SDN controller
  • the core network control plane function device is further configured to send the routing policy to the core network SDN controller, where the core network SDN controller is configured to forward the routing policy to the core network gateway device. And causing the core network gateway device to send the routing policy to the user equipment.
  • the SDN controller is further configured to send to the core network gateway device.
  • the routing policy is configured to enable the core network gateway device to send the routing policy to a user equipment.
  • the core network gateway device is further configured to send the Routing strategy.
  • the core network gateway device is further configured to pass the second When the access network corresponding to the access mode sends a data packet to the user equipment, the IP address obtained when the user equipment accesses the network through the second access mode and the IP address obtained when accessing the network by using the first access mode are obtained. If the IP address is the same, if the packet is different, the packet is sent after the header is added to the outer layer of the to-be-sent packet, and the destination IP address in the header is added by the user equipment to access the second access mode.
  • the source IP address when the source IP address of the inner layer header is the same as the IP address obtained when the user equipment accesses the network by using the first access mode, discards the outer packet of the data packet and forwards the data packet.
  • the embodiment of the present invention provides a service flow QoS policy-making device, which can implement the function of the service flow QoS policy-making device in the foregoing method, where the function can be implemented by hardware or by hardware.
  • Software Implementation The hardware or software includes one or more modules corresponding to the functions described above.
  • the service flow QoS policy making device includes: a processor and a memory, and the storage
  • the apparatus is configured to store application code supporting a service flow QoS policy making device to perform the above method, the processor being configured to execute an application stored in the memory.
  • the service flow QoS policy making device may further include a communication interface for the service flow QoS policy making device to communicate with other devices or the communication network.
  • an embodiment of the present invention provides a computer storage medium, configured to store computer software instructions used by the service flow QoS policymaking device, where the program includes a program designed to implement the foregoing service flow QoS policy formulation device. .
  • FIG. 1 is a schematic structural diagram of an MPTCP layer provided in the prior art
  • FIG. 2 is a schematic flowchart of a method for transmitting a service flow by using an MPTCP protocol provided in the prior art
  • FIG. 3 is a schematic structural diagram of a service flow transmission system according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a service flow transmission method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of a core network gateway device and a user equipment performing a routing policy according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a service flow QoS establishment device according to an embodiment of the present invention.
  • user equipment can access the network through more and more access methods. More commonly, user equipment can pass WIreless-Fidelity (Wi-Fi), radio access network (Radio Access Network, RAN). If the access mode is connected to the network, it is not excluded in the future that the user equipment can access the network through other means. In this case, there may be an application scenario in which the user equipment accesses the network through at least the first access mode and the second access mode, and the service flow is the access network corresponding to the user equipment only through the first access mode. The transmitted service flow, or the new service flow initiated by the access network corresponding to the first access mode.
  • Wi-Fi WIreless-Fidelity
  • RAN Radio Access Network
  • the user equipment UE involved in the present application may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices or other processing devices connected to the wireless modem, and various forms of user equipment ( User Equipment, UE), Mobile Station (MS), Terminal, Terminal Equipment, Soft Terminal, etc.
  • User Equipment User Equipment
  • MS Mobile Station
  • Terminal Terminal Equipment
  • Soft Terminal etc.
  • the devices mentioned above are collectively referred to as user equipments or UEs.
  • the network referred to in the embodiment of the present invention may be a wireless network, such as a 4G, a 5G network, etc.
  • the incoming network refers to the process in which the user equipment establishes a connection with an access point corresponding to different access modes, and completes attachment, authentication, and IP address allocation to the control plane of the core network through the access point.
  • the first access mode and the second access mode are any two different access modes.
  • the user equipment may also access the third access mode and the fourth access mode.
  • Other access methods such as mode access the network.
  • the “first”, “second”, “third” and the like referred to in the embodiments of the present invention are only used to distinguish different access modes, and do not refer to specific access modes, and do not limit different access modes. order of.
  • the service flow transmitted by the access network corresponding to the first access mode in the embodiment of the present invention means that the user equipment has established a bearer for the service flow and uses the established bearer by using the access network corresponding to the first access mode.
  • the service flow to be transmitted; the new service flow initiated by the access network corresponding to the first access mode means that the user equipment initiates establishment through the access network corresponding to the first access mode, but has not yet transmitted, and is in the process of being established. New business flow.
  • the network side device can learn information about which access modes the user equipment accesses the network, obtain the IP address, and the like; During the establishment process, the network side device can obtain attribute information such as the identifier of the service flow.
  • the network side device (such as the service flow QoS policy making device) can determine whether the user equipment accesses the network through multiple access methods and the attribute information of the service flow that the user equipment is transmitting or is initiating the establishment. For example, the user equipment accesses the 5G network through the access mode of the 5G RAN.
  • the access here refers to the user equipment accessing the 5G base station first, and completing the attachment, authentication, and IP address allocation to the control device of the 5G core network control plane.
  • the bearer establishment process, and the 5G core network control plane function device also completes the interaction with the service flow QoS policy making device, so that the service flow QoS policy making device knows the access type and IP address of the user equipment.
  • the service flow QoS policy-making device can obtain information such as the access type and the acquired IP address of the user equipment accessing the network.
  • the application scenario of the embodiment of the present invention may be that the user equipment accesses the network through two access modes, namely, Wi-Fi and RAN, and the user equipment only passes the access network corresponding to the RAN or only through the Wi-Fi.
  • the corresponding access network initiates the process of establishing a new service flow; and may also access the network in the user equipment through the Wi-Fi and RAN access modes, and the user equipment only passes the access network corresponding to the RAN or only The process of transmitting an established service flow through an access network corresponding to Wi-Fi.
  • the quality of service (QoS) requirements of the service flow due to the poor network state of the access network corresponding to the first access mode may not be satisfactorily satisfied, thereby causing services.
  • the problem of low transmission efficiency of the stream may not be satisfactorily satisfied, thereby causing services.
  • the embodiment of the present invention provides a service flow transmission system, which can be applied to the foregoing application scenario, and specifically includes: a service flow QoS policy formulation device 101 and a core network service flow transmission control device 102.
  • the service flow QoS policy formulation device 101 is mainly used to formulate a QoS policy for a service flow.
  • the service flow QoS policy formulation device can be implemented by hardware or by executing corresponding software through hardware.
  • the service flow QoS policy making device may be a PCRF in a 4G network architecture.
  • the service flow QoS policy-making device may be a module or entity that implements QoS policy formulation and adjustment functions in a 5G network architecture. For example, after applying NFV technology in a 5G network, it is used to implement QoS policy formulation.
  • the adjustment function may be implemented by a software module located on a general-purpose hardware device, and the service flow QoS policy-making device is the software module located on the general-purpose hardware device.
  • the core network service flow transmission control device 102 is mainly configured to receive a QoS policy formulated by the service flow QoS policy formulation device, and formulate a routing policy according to the QoS policy, and may define a core network control plane function device and a core network software definition network. Any one of the SDN controller or the core network gateway device.
  • the core network control plane function device is an MME; the core network gateway device is a PGW, and if an SDN technology is applied to the 4G network,
  • the core network SDN controller is an SDN controller in a 4G network.
  • the core network traffic flow control device can be any one of an MME, a PGW, or an SDN controller in the 4G network.
  • the core network control plane function device is a core network control plane function module, and the module can be analogized to an MME in a 4G network for implementing connection management, authentication, and Security and mobility management functions;
  • the core network gateway device is a core network gateway module having a control plane function.
  • the core network SDN controller is an SDN controller in the 5G network. Therefore, the core network service flow transmission control device may be any one of a core network control plane function module, a core network gateway module, or an SDN controller in the 5G network.
  • the traffic flow QoS policy making device in FIG. 3 can be implemented in the manner of the computer device (or system) in FIG.
  • FIG. 4 is a schematic diagram of a computer device according to an embodiment of the present invention.
  • the computer device 200 includes at least one processor 201, a communication bus 202, a memory 203, and at least one communication interface 204.
  • the processor 201 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication bus 202 can include a path for communicating information between the components described above.
  • the communication interface 204 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • RAN Radio Access Network
  • WLAN Wireless Local Area Networks
  • the memory 203 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory 203 is used to store application code for executing the solution of the present invention, and is controlled by the processor 201 for execution.
  • the processor 201 is configured to execute application code stored in the memory 203.
  • processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • computer device 200 can include multiple processors, such as processor 201 and processor 207 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • computer device 200 may also include an output device 205 and an input device 206.
  • Output device 205 is in communication with processor 201 and can display information in a variety of ways.
  • the output device 205 can be a liquid crystal display (LCD), a light emitting diode (LED). Display device, cathode ray tube (CRT) display device, or projector (projector).
  • Input device 206 is in communication with processor 201 and can accept user input in a variety of ways.
  • input device 206 can be a mouse, keyboard, touch screen device or sensing device, and the like.
  • the computer device 200 described above can be a general purpose computer device or a special purpose computer device.
  • the computer device 200 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or have the following FIG. A device of similar structure.
  • Embodiments of the invention do not limit the type of computer device 200.
  • the service flow QoS policy making device 101 in FIG. 3 may be the device shown in FIG. 4, and one or more software modules are stored in the memory of the service flow QoS policy making device 101.
  • the service flow QoS policy formulation device 101 can implement the software module by using the processor and the program code in the memory, so that when the service flow transmitted by the access network corresponding to only one access mode cannot meet the QoS requirement of the service flow, The QoS policy is determined to transmit the traffic flow through two or more access networks.
  • the embodiment of the present invention provides a network architecture, where the network architecture includes at least a first access point and a second access point, a service flow QoS policy making device, a core network control plane function device, and a core.
  • Network gateway device SDN controller.
  • the network architecture may be a network architecture of the 4G network.
  • the core network control plane function device, the core network gateway device, and the SDN controller are respectively equivalent to the MME, the PGW, and the SDN controller in the 4G network.
  • the network architecture may be a network architecture of a 5G network.
  • the core network control plane function device, the core network gateway device, and the SDN controller may be implemented by a software module on a general-purpose device.
  • the service flow transmission method provided by the embodiment of the present invention is applied to the foregoing network architecture, and the service flow QoS policy formulation device 101 in FIG. 3 is a service flow QoS policy formulation device in the network architecture, and the core network in FIG.
  • the service flow transmission control device 102 can be described as an example of any one of the core network control plane function device, the core network gateway device, and the SDN controller in the network architecture.
  • the method in the method embodiment may be adopted.
  • the user equipment accesses the network through the first access mode and the second access mode, and the user equipment transmits the established service flow or initiates a new service by using the access network corresponding to the first access mode.
  • the method includes:
  • the service flow QoS policy making device obtains, by the access network corresponding to the first access mode, whether the service flow can satisfy the service quality QoS requirement corresponding to the service flow.
  • the quality of service QoS requirement includes a requirement for setting the one or more QoS parameters of the service flow, such as a transmission bandwidth, a packet loss rate, and a delay.
  • QoS parameters such as transmission bandwidth, packet loss rate, and delay.
  • the session class and the streaming media service have higher delay requirements and higher bandwidth requirements; while WWW, Email, (File Transfer Prot, FTP) services, and news services require less delay.
  • the service flow QoS policy-making device can obtain, by using the following three implementation manners, whether the access network corresponding to the first access mode transmits the service flow to meet the QoS corresponding to the service flow. The judgment result of the demand.
  • the first implementation manner is: the service flow QoS policy making device receives the QoS requirement corresponding to the service flow sent by the other device, and the network state information of the access network corresponding to the first access mode; the service flow QoS policy The determining device further determines, according to the network state information and the QoS requirement, whether the service network corresponding to the first access mode transmits the service flow to meet the QoS requirement, and obtains a determination result.
  • the network status information in the implementation manner may include information such as an air interface load situation, a resource usage situation, such as a link bandwidth usage rate, and a data link congestion status.
  • Other devices can be an application-side device: Application Function (AF) device.
  • AF Application Function
  • the application function device stores the QoS requirements corresponding to the service flow.
  • the application function device may be a Proxy-Call Session Control Funnel (P-CSCF) device, and the device can transmit dynamic service state information and the like to the service flow QoS policy formulation device.
  • P-CSCF Proxy-Call Session Control Funnel
  • the other device may also be an application function device and a network monitoring device, where the application function device is configured to send the QoS requirement corresponding to the service flow to the service flow QoS policy formulation device, and the specific functions and implementations thereof are as described above;
  • the network monitoring device is equivalent to the probes disposed in each segment of the network, and can evaluate the actual transmission state of the current service flow by copying and analyzing the user plane data features, and send the status information to the service flow QoS policy formulation device.
  • the service flow QoS policy-making device after receiving the QoS requirement and the network state information from the other device, the service flow QoS policy-making device has the capability of determining, and may be based on the network state information of the access network corresponding to the first access mode and the The QoS requirement of the service flow determines whether the service flow can be satisfied by the access network corresponding to the first access mode.
  • the air interface of the access network corresponding to the first access mode has a large load, a large amount of resources, or a heavy link, the access network can be transmitted only through the access network corresponding to the first access mode, and the service flow cannot be satisfied. The judgment result of the QoS requirement.
  • the second implementation manner is: the service flow QoS policy setting device receives, by the application function device or the network access device, the access network corresponding to the first access mode, whether the service flow can meet the QoS corresponding to the service flow. The judgment result of the demand.
  • the service flow QoS policy-making device obtains the final judgment result directly from the application function device or the network monitoring device, and does not need to perform judgment on itself, which can reduce the load of the service flow QoS policy-making device.
  • the third implementation manner is: the service flow QoS policy making device receives the QoS requirement corresponding to the service flow sent by the application function device; sends the QoS requirement to the core network service flow transmission control device; and receives the core network service flow transmission
  • the access network corresponding to the first access mode sent by the control device transmits whether the service flow can satisfy the determination result of the QoS requirement corresponding to the service flow.
  • the service flow QoS policy-making device may have a large load or no ability to perform the judgment.
  • the service flow QoS policy-making device obtains the QoS requirement corresponding to the service flow from the application function device, and then forwards the QoS requirement to the service flow device.
  • the core network service stream transmission control device is judged by the core network service flow transmission control device, and the judgment result is sent to the service flow QoS policy formulation device. With this implementation, the load of the service flow QoS policy making device can also be reduced.
  • the execution entities that determine whether the service network corresponding to the first access mode transmits the service flow can meet the QoS requirement corresponding to the service flow are respectively The application device, the network monitoring device, and the core network service flow control device are used.
  • the specific implementation process of the determination may refer to the implementation process when the service flow QoS policy is used as the execution subject in the first implementation manner.
  • the service flow QoS policy making device determines a QoS policy of the service flow.
  • the determining the QoS of the service flow in the step 302 can be understood as a two-layer meaning, specifically: when the service flow is a service flow that has been established and transmitted through the access network corresponding to the first access mode.
  • the QoS policy is determined, and the QoS policy is determined to adjust the QoS policy to obtain an adjusted QoS policy.
  • Determine the QoS when new traffic flows A policy refers to a process in which a user equipment and a network side application plane device negotiate to determine a QoS requirement, and formulate a QoS policy according to QoS requirements and network conditions.
  • the QoS policy indicated in the step 302 is used to indicate that the service flow is transmitted by using an access network corresponding to the first access mode and the second access mode, respectively. That is, after the QoS policy is adjusted for the established service flow, the adjusted QoS policy is used to adjust the transmission mode of the existing access network transmission service flow corresponding to only one access mode to two types of access. The access network corresponding to the mode is transmitted in parallel.
  • the traffic network corresponding to the access network corresponding to the access mode is only indicated
  • the QoS policy defined in the embodiment of the present invention is used to indicate that the access network corresponding to the two access modes is used to transmit the service flow.
  • the first access mode and the second access mode are not limited to a specific access mode, and should be understood as any two types; the QoS policy determined here is not limited to only two access modes.
  • the corresponding access network transport service flow should be understood as two or more.
  • the service flow QoS policy-making device acquires each access mode corresponding to the access network service flow corresponding to the two access modes.
  • the network state information of the access network determining the priority of each access mode according to the network state information of the access network corresponding to each access mode; and the first access mode and the first priority having a priority greater than a preset threshold
  • the access network corresponding to the second access mode is determined to be an access network for transmitting the service flow.
  • the information related to the network state such as the load of each access network, the link bandwidth usage rate, and the like, may be comprehensively determined, and the priority of each access mode is determined according to the quality of the network state, and the priority is determined. After the priority, the access network corresponding to the two access modes with better priority is determined as the access network for transmitting the service flow.
  • the user equipment has initiated the establishment of a new service flow through the access network corresponding to the access mode, indicating that the user equipment may have completed the service through the access network.
  • the flow initially establishes the required process, or the user equipment has already transmitted the existing service flow through the access network corresponding to the access mode, indicating that the user equipment has established the service flow corresponding to the access network corresponding to the access mode. All the processes required to establish a service flow, etc., in order to simplify the process of determining the QoS policy, such as the bearer establishment update, start the traffic flow process as soon as possible to improve the transmission efficiency, and determine the multiple accesses in the QoS policy.
  • the mode includes at least an access mode corresponding to the initial initiation of the service flow of the user equipment or an access mode that has been used to transmit the service flow.
  • the service flow QoS policy making device sends the QoS policy to the core network service flow control device.
  • the traffic flow control device determines the routing policy according to the QoS policy.
  • the service flow transmission control device may be any one of a core network control plane function device, a core network gateway device, or an SDN controller.
  • 5 shows a specific implementation manner of step 303 and step 304 when the service flow transmission control device is any one of the above three devices, but steps 303 and 304 are not shown.
  • step 303 and step 304 if the system includes a core network control plane function device, an SDN controller, and a route forwarding function having only a data plane, and does not have a control plane function.
  • Core The network gateway, the core network service flow control device shown in FIG. 3 may be a core network control plane function device.
  • the step 303 can be expressed as 303a: the service flow QoS policy making device sends the QoS policy to the core network control plane function device.
  • Step 304 is step 304a: the core network control plane function device determines the routing policy according to the adjusted QoS policy.
  • the method further includes the step 305a: the core network control plane function device sends the routing policy to the core network SDN controller.
  • 306a The core network SDN controller forwards the routing policy to the core network gateway device.
  • 307a The core network gateway device sends the routing policy to a user equipment.
  • the core network traffic flow control device shown in FIG. 3 may be a core network SDN controller.
  • the step 303 can be expressed as 303b: the service flow QoS policy making device sends the QoS policy to the core network SDN controller.
  • Step 304 is step 304b: the core network SDN controller determines the routing policy according to the QoS policy.
  • the method further includes step 305b: the core network SDN controller forwards the routing policy to the core network gateway.
  • 306b The core network gateway sends the routing policy to a user equipment.
  • the system includes a core network control plane function device, and a core network gateway device that only has a data plane routing forwarding function and does not have a control plane function, and does not include a core network.
  • the SDN controller, the core network traffic stream control device shown in FIG. 3 may be a core network control plane function device.
  • the step 303 can be expressed as 303c: the service flow QoS policy making device sends the QoS policy to the core network control plane function device.
  • Step 304 is step 304c: the core network control plane function device determines the routing policy according to the QoS policy.
  • the method further includes the step 305c: the core network control plane function device forwards the routing policy to the core network gateway device.
  • 306c The core network gateway device sends the routing policy to the user equipment.
  • Step 303 can be expressed as 303d: the service flow QoS policy making device sends the QoS policy to the core network gateway.
  • Step 304 is step 304d: the core network gateway determines the routing policy according to the adjusted QoS policy.
  • the method further includes the step 305d: the core network gateway sends the routing policy to the user equipment.
  • the gateway device when receiving the downlink data packet from the network side device, the gateway device allocates the received downlink data packet according to the transmission bandwidth ratio.
  • the splitting is performed, and the split data packets are respectively transmitted through the access network corresponding to different access modes.
  • the gateway equipment will be the same traffic flow, but the uplink data packets transmitted through different access networks are combined.
  • the user equipment also performs a new routing policy, splits the uplink data packet and then transmits it through the access network corresponding to different access modes, and merges the downlink data packets.
  • the core network service flow transmission control device also needs to decide whether a new bearer needs to be established. For example, if the user equipment accesses the network through the Wi-Fi access point and the RAN respectively, the core network service flow control device determines whether a new bearer needs to be established; when the Wi-Fi access point has not yet carried the bearer to the gateway, it needs to Initiate the process of establishing a bearer.
  • the service flow transmission method provided by the embodiment of the present invention can access the existing service flow or establish a new service flow by using only one access mode corresponding to the access network in the user equipment.
  • the service flow QoS policy making device determines a QoS policy for indicating the service flow of the access network corresponding to the two access modes.
  • the service flow transmission method provided by the present invention has a poor network condition in the current network (the access network corresponding to the first access mode), compared with the prior art using the MPTCP protocol for service flow transmission.
  • the QoS policy of the service flow is determined, so that the service flow can be simultaneously transmitted in parallel to the access network corresponding to the two access modes according to the network condition, thereby reducing the network load of the current network, thereby improving Traffic efficiency.
  • the QoS policy is further used to indicate that the access network corresponding to the first access mode and the second access mode are respectively transmitted.
  • the transmission bandwidth of the service flow Therefore, in an implementation manner of determining the QoS policy of the service flow, the process of determining the transmission bandwidth corresponding to the first access mode and the second access mode, respectively, is specifically required to obtain the first At least one link parameter of the access network corresponding to the access mode and the second access mode; determining, according to the preset weight of each link parameter, the transmission of the access network corresponding to the first access mode and the second access mode a bandwidth allocation ratio; determining, according to the transmission bandwidth allocation ratio, a transmission bandwidth of the access network corresponding to the first access mode and the second access mode, respectively.
  • the acquired link parameters include three link parameters: Round Trip Time (RTT), jitter, and packet loss rate, and the weights of the three link parameters are 0.8, 0.1, and 0.1, respectively.
  • RTT Round Trip Time
  • the jitter of the access network corresponding to the second access mode is corresponding to the first access mode.
  • the packet loss rate of the access network corresponding to the second access mode is 0.5 times that of the access network corresponding to the first access mode
  • the second access mode corresponds to the jitter of the access network.
  • the transmission bandwidth determined by the access network corresponding to the access mode is 1.8 times the transmission bandwidth of the access network corresponding to the first access mode.
  • step 302 in addition to separately determining a transmission bandwidth when the service flow is transmitted through the access network corresponding to each access mode, determining, respectively, that the service flow is corresponding to each access mode The value of the QoS parameters such as the delay and packet loss rate during network transmission.
  • the requirements of the delay and the packet loss rate may be set according to the QoS requirements of the service flow obtained in step 301.
  • the QoS policy includes attribute information of the service flow, first network attribute information, value of a first QoS parameter set, second network attribute information, and a second QoS parameter set.
  • the service flow attribute information is used to identify the service flow; the first network attribute information is used to identify an access network corresponding to the first access mode; and the value of the first QoS parameter set is used.
  • the value of the at least one QoS parameter is used to indicate a setting requirement of each QoS parameter when the service flow is transmitted by the access network corresponding to the first access mode; the second network attribute information is used to identify The access network corresponding to the second access mode; the value of the second QoS parameter set includes a value of the at least one QoS parameter, and is used to indicate that the access network corresponding to the second access mode is used.
  • the QoS parameter set includes QoS parameters such as a transmission bandwidth, a delay, and a packet loss rate.
  • the QoS policy corresponding to the service flow is: the service flow is transmitted through the access network corresponding to the RAN access mode, and the transmission process is in the process of transmission.
  • the transmission bandwidth, delay, and packet loss rate are transmission bandwidth 1, delay 1 and packet loss rate 1, respectively.
  • the QoS policy corresponding to the service flow is: 1.
  • the service flow is transmitted through the access network corresponding to the RAN access mode, and the transmission bandwidth, delay, and packet loss rate in the transmission process are respectively the transmission bandwidth.
  • Delay 11 and packet loss rate 11 and 2 the service flow is transmitted through the access network corresponding to the Wi-Fi access mode, and the transmission bandwidth, delay, and packet loss rate during transmission
  • the transmission bandwidth 22, the delay 22, and the packet loss rate 22 are respectively.
  • the core network gateway device and the user equipment use the IPinIP data encapsulation method when the data packet is sent according to the established routing policy.
  • the encapsulation of the IPinIP in the embodiment of the present invention is: when the gateway device sends a data packet to the user equipment by using the access network corresponding to the second access mode, the gateway device determines that the user equipment passes the second Whether the IP address obtained when the access mode accesses the network is the same as the IP address obtained when accessing the network by using the first access mode; if different, the data is sent after the header is added to the outer layer of the to-be-sent packet. a packet, the added destination IP address in the header is an IP address obtained by the user equipment when accessing the network by using the second access mode, and the gateway device receives the user equipment corresponding to the second access mode.
  • the data packet When the data packet is sent by the access network, the data packet is decapsulated, and the source IP address of the inner layer header of the data packet is obtained. When the source IP address of the inner layer header and the user equipment pass the first When the IP address obtained when the access mode is connected to the network is the same, the outer packet of the data packet is discarded and the data packet is forwarded.
  • the service flow is transmitted by the access network corresponding to the first access mode and the second access mode, respectively, and the gateway device receives three downlinks of A1, A2, and B belonging to the same service flow.
  • the A1 and A2 are corresponding to the first access mode according to the transmission bandwidth of the access network corresponding to the first access mode and the transmission bandwidth allocation of the access network corresponding to the second access mode.
  • the access network sends the packet to the user equipment, and sends the data packet B to the user equipment through the access network corresponding to the second access mode.
  • the data packets A1 and A2 are sent, they can be directly sent to the user equipment.
  • the destination IP address of the data packet B is the user equipment accessing the network through the first access method.
  • the IP address obtained by the user accessing the network through the second access mode is different from the IP address obtained when the user accesses the network through the first access mode.
  • the access network sends the data packet B, it needs to encapsulate an IP header in the data packet B.
  • the source address of the IP header remains unchanged.
  • the destination address is the IP address obtained when the user equipment accesses the network through the second access mode.
  • the IP header of the address, port number, protocol, and inner layer are the same, so that the data packet B can be transmitted through the access network corresponding to the second access mode.
  • the user equipment performs decapsulation, determines that the data packet B and the data packets A1 and A2 belong to the same service flow, and then processes the service flow.
  • the data packets A1, A2, and B are still taken as an example.
  • the data packets of the same service flow are split according to the above processing procedure to be respectively connected through different access modes. Network access for transmission.
  • the gateway device when the gateway device receives the A1 and A2 sent by the user equipment through the access network corresponding to the first access mode, and the data packet B sent by the user equipment through the access network corresponding to the second access mode, the user equipment When transmitting, the IP packet is encapsulated in the IP packet (the IP header is called the outer IP header), and the source IP address of the IP header is the IP address obtained when the user equipment accesses the network through the second access method; The packet before the packet B is not encapsulated (the IP header is called the inner IP header) is the IP address obtained when the user equipment accesses the network through the first access mode. Therefore, the gateway device needs to decapsulate the received data packet B.
  • the inner IP address of the data packet B is the IP address obtained when the user equipment accesses the network through the first access mode
  • the data packet B is connected with A1 and A2. Determined to belong to the same business stream after transmission.
  • the embodiment of the present invention further provides a structure diagram of a service flow QoS-making device, which is applied to a user equipment to access a network through at least a first access mode and a second access mode, and the service flow is adopted.
  • the access network corresponding to the first access mode transmits or initiates the established service flow
  • the method includes: an obtaining unit 401 and a processing unit 402.
  • the obtaining unit 401 is configured to obtain, by the access network corresponding to the first access mode, whether the service flow can satisfy the service quality QoS requirement corresponding to the service flow.
  • the processing unit 402 is configured to determine a QoS policy of the service flow, when the determining result is that the service network corresponding to the first access mode transmits the service flow cannot meet the QoS requirement, the QoS policy The policy is used to indicate that the service flow is transmitted by using an access network corresponding to the first access mode and the second access mode, respectively.
  • the acquiring unit 401 is specifically configured to receive a QoS requirement corresponding to the service flow and network state information of an access network corresponding to the first access mode; and according to the network state information and the QoS requirement And determining, by the access network corresponding to the first access mode, whether the service flow can meet the QoS requirement, and obtaining a determination result.
  • the acquiring unit 401 is specifically configured to receive, by the application function device or the network access device, the access network corresponding to the first access mode, whether the service flow can meet the QoS requirement of the service flow. The result of the judgment.
  • the acquiring unit 401 is specifically configured to receive a QoS requirement corresponding to the service flow sent by the application function device, send the QoS requirement to a core network service flow transmission control device, and receive the core network service flow transmission control.
  • the access network corresponding to the first access mode sent by the device transmits whether the service flow can satisfy the determination result of the QoS requirement corresponding to the service flow.
  • the processing unit 402 is specifically configured to acquire each access mode when the user equipment accesses the network by using at least three access modes including the first access mode and the second access mode.
  • the access network corresponding to the second access mode is determined to be an access network for transmitting the service flow.
  • the QoS policy determined by the processing unit 402 is further used to indicate a transmission bandwidth when the service flow is transmitted by the access network corresponding to the first access mode and the second access mode, respectively.
  • the processing unit 402 is further configured to acquire at least one link parameter of the access network corresponding to the first access mode and the second access mode, respectively, and determine the first according to the preset weight of each link parameter.
  • processing unit 402 is further configured to send the QoS policy to the core network service flow control device, so that the core network traffic control device determines the routing policy according to the QoS policy.
  • the user equipment accesses the network through at least two access modes, and only the access service corresponding to the access mode transmits the existing service flow or establishes a new service flow, which cannot meet the QoS requirement of the service flow.
  • the QoS policy for indicating the traffic flow of the access network corresponding to the two access modes is determined.
  • the service flow transmission device provided by the present invention has a poor condition in the current network (the access network corresponding to the first access mode), and cannot meet the QoS requirement of the service flow, as compared with the traffic flow transmission using the MPTCP protocol in the prior art.
  • the QoS policy of the service flow is determined, so that the service flow can be simultaneously transmitted in parallel to the access network corresponding to the two access modes according to the network condition, which can reduce the network load of the current network, thereby improving the service flow efficiency.
  • the service flow QoS policy making device is presented in the form of a functional unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device.
  • ASIC application-specific integrated circuit
  • the traffic flow QoS policymaking device may take the form shown in FIG.
  • the obtaining unit 401 and the processing unit 402 can be implemented by the processor and the memory of FIG.
  • the embodiment of the present invention further provides a computer storage medium for storing the computer software instructions used by the service flow QoS policymaking device shown in FIG. 7 above, which includes a program designed to execute the foregoing method embodiments.
  • the access network corresponding to the two access modes can be used to transmit the service flow.
  • the embodiment of the present invention further provides another computer storage medium for storing computer software instructions used by the core network service flow control device, which includes a program designed to execute the foregoing method embodiments.
  • the access network corresponding to the two access modes can be used to transmit the service flow.
  • embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

本发明公开了一种业务流传输方法、装置及系统，涉及通信技术领域。为了解决现有技术中存在的发送发和接收方无法感知当前网络状况，不能根据网络状态来进行业务流传输的问题而发明。其中，该业务流传输方法，包括：获取第一接入方式对应的接入网传输所述业务流是否能够满足业务流对应的服务质量QoS需求的判断结果；当判断结果为通过第一接入方式对应的接入网传输所述业务流无法满足QoS需求时，确定业务流的QoS策略，QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。本发明应用在业务流传输过程中。

Description

业务流传输方法、装置及系统
本申请要求于2016年2月4日提交中国专利局、申请号为201610080066.5、发明名称为“业务流传输方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种业务流传输方法、装置及系统。
背景技术
随着通信技术的发展，第五代移动通信技术(5-Generation，5G)，成为通信领域的研究热点。5G网络中引入了网络功能虚拟化(Network Function Virtualization，NFV)技术和软件定义网络(Software Defined Network，SDN)技术。其中，NFV技术是指通过使用x86等通用性硬件以及虚拟化技术，将原来通过硬件实现的网络功能通过软件来实现，实现网络功能虚拟化，降低硬件成本。例如：传统网络中的移动性管理实体(Mobility Management Entity，MME)、分组数据网网关(Packet Data Network Gateway，PGW)、策略与计费规则功能(Policy and Charging Rules Function，PCRF)单元等网络实体的功能，在5G网络中通过软件模块来实现，可分别称之为核心网控制面功能模块、核心网网关模块、业务流服务质量(Quality of Service，QoS)策略控制功能模块等。SDN技术是网络虚拟化的一种实现方式，通过采用开放流(OpenFlow)技术将网络设备控制面与数据面分离开来，从而实现网络流量的灵活控制。例如：SDN控制器是SDN中的应用程序，能够实现传统网络中网关(Gateway，GW)中的协议交互和流量控制等控制功能，将网关的控制功能和数据转发功能分离开。
相比于传统网络，5G网络的网络带宽大幅提升，传输带宽也较大。为了适应5G网络的较大传输带宽的需求，现有技术中提供了一种多路径传输层协议(Multipath Transmission Control Protocol，MPTCP)，可以通过多流的并发传输改善TCP协议的传输行为，适应更大传输带宽的要求，提升网络传输环境的适应性。如图1所示，MPTCP层为在原有的应用层和传输层之间新增的一层传输层，原有的TCP层只针对子流起作用，使得通信双方从应用层来看，传输层仍然是单路通信。如图2所示，具体应用过程中，发送方A具有A1和A2两个通信地址；接收方B具有B1和B2两个通信地址。则，通信双方A和B分别利用地址A1和B1通过3次握手建立初始化连接，并在该过程中协商是否采用MPTCP；如果支持MPTCP，则A和B完成初始化连接后，便建立起一条A1到B1之间的通信链路。另外，发送方A还会告知接收方B其所具有的其他IP地址；A和B任意一方可以采用一对当前没有使用的地址来新建一个子流，从而实现MPTCP，例如：图2中还示出了A和B之间建立的一条A2到B2之间的通信链路。
但是，现有技术的这种采用MPTCP协议进行业务流传输以提高传输带宽的方案，是否需要建立子流由发送方和接收方协商决定，发送方和接收方无法感知当前网络状况，可能 存在当前网络状况较差时，仍然通过当前网络建立多个子流进行数据传输，加剧了网络负荷，导致业务流传输效率较低。
发明内容
本发明提供一种业务流传输方法、装置及系统，以解决现有技术中存在的采用MPTCP协议进行业务流传输时，不能根据网络状态来进行业务流传输的问题。
目前，用户设备可通过越来越多的接入方式接入网络中，较常见的，用户设备可通过无线保真(WIreless-Fidelity，Wi-Fi)、无线接入网(Radio Access Network，RAN)等接入方式接入网络中，未来不排除用户设备还可通过其他方式接入网络。在业务流传输过程中，存在这样的应用场景：用户设备至少通过第一接入方式和第二接入方式接入网络，且所述业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流。
第一方面，本发明实施例提供一种业务流传输方法，应用于前文所述的应用场景下，所述方法包括：获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果；当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。
其中，上述方案的执行主体应当理解为能够执行上述方法流程的任意硬件设备或软件模块。为了便于描述，本发明实施例中将能够执行上述方法流程的任意硬件设备或软件模块统一描述为业务流QoS策略制定设备。但采用业务流QoS策略制定设备这一名称并不对本发明实施例的执行主体进行限定。例如：在4G网络中，该业务流QoS策略制定设备可以为PCRF，在采用了NFV技术的5G网络中则为通用设备上的用于确定业务流的QoS策略的软件模块。
采用上述方案后，在用户设备至少通过两种接入方式接入网络中，且仅通过一种接入方式对应的接入网传输已有业务流或建立新业务流无法满足业务流的QoS需求的情况下，业务流QoS策略制定设备确定用于指示通过两种接入方式对应的接入网传输业务流的QoS策略。与现有技术中采用MPTCP协议进行业务流传输相比，本发明提供的业务流传输方法，在当前网络(第一接入方式对应的接入网)状况较差，无法满足业务流的QoS需求的情况下，确定业务流的QoS策略，使得根据网络情况使业务流能够同时在两个接入方式对应的接入网并行传递，减轻当前网络的网络负荷，进而提高业务流传输效率。
在第一方面的一种可能的设计中，业务流QoS策略制定设备可通过以下三种实现方式获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
其中，第一种实现方式为：业务流QoS策略制定设备接收所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。在该实现方式中，业务流QoS策略制定设备从其他设备获取业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息，然后自行进行判断，得到判断结果。
第二种实现方式为：业务流QoS策略制定设备接收应用功能设备或网络监控设备发送 的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。在该实现方式中，业务流QoS策略制定设备从应用功能设备或网络监控设备获取最终的判断结果，这样能够减少业务流QoS策略制定设备的负荷。
第三种实现方式为：业务流QoS策略制定设备接收应用功能设备发送的所述业务流对应的QoS需求；向核心网业务流传输控制设备发送所述QoS需求；接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。在该实现方式中，业务流QoS策略制定设备从应用功能设备获取业务流对应的QoS需求后转发给核心网业务流传输控制设备，并由核心网业务流传输控制设备进行判断后，把判断结果发送给业务流QoS策略制定设备，这样能够减少业务流QoS策略制定设备的负荷。
在第一方面的一种可能设计中，在所述用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，在确定所述业务流的QoS策略这一步骤的一种实现方式中，具体包括：业务流QoS策略制定设备获取每个接入方式对应的接入网的网络状态信息；根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。在该实现方式中，当用户设备通过三种以上的接入方式接入网络时，业务流QoS策略制定设备从所述三种以上的接入方式中选取两种网络状态较好的接入网用于传输所述业务流，能够有效利用网络状态较好的接入网进行数据传输，能够提高业务流传输过程中的效率。
在第一方面的一种可能的设计中，业务流QoS策略制定设备确定的所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。
因此，在所述确定所述业务流的QoS策略的一种实现方式中，还需要包括分别确定第一接入方式和第二接入方式对应的传输带宽的过程，具体为：分别获取第一接入方式和第二接入方式对应的接入网的至少一个链路参数；根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配比值；根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。在该实现方式中，根据两个接入方式对应的接入网的链路状况分配传输带宽，使得链路状况较好的接入网传输更多的数据，能够提高网络传输带宽。
在第一方面的一种可能的设计中，所述确定所述业务流的QoS策略之后，所述方法还包括：业务流QoS策略制定设备向核心网业务流传输控制设备发送所述QoS策略，以便于所述核心网业务流传输控制设备根据所述QoS策略确定路由策略。在该实现方式中，核心网业务流传输控制设备根据所述QoS策略确定路由策略以便于后续数据传输过程中，用户设备和网关设备根据该路由策略进行数据转发。
其中，所述核心网业务流传输控制设备可以为核心网控制面功能设备，则当其制定完路由策略后通过SDN控制器(如果网络中存在SDN控制器)转发给核心网网关设备或直接发送给核心网网关设备，并由核心网网关设备发送给用户设备，这样在后续的业务流传输过程中，可根据新的路由策略进行数据包的发送。所述核心网业务流传输控制设备还可以为SDN控制器，SDN控制器在制定完路由策略后，将路由策略发送给核心网网关设备，并由核心网网关设备发送给用户设备。所述核心网业务流传输控制设备还可以为包含控制 面功能的核心网网关设备，核心网网关设备制定完路由策略后，本地保存，并将该路由策略发送给用户设备。
具体的，当所述业务流传输方法应用在4G网络中时，所述核心网控制面功能设备为移动管理实体(Mobility Management Entity，MME)；所述核心网网关设备为分组数据网网关(Packet Data Network GateWay，PGW)；如果4G网络中应用了SDN技术，则所述核心网SDN控制器则为4G网络中的SDN控制器。当所述业务流传输方法应用在5G网络中时，所述核心网控制面功能设备为核心网控制面功能模块；所述核心网网关设备为核心网网关模块。同样，如果5G网络中应用了SDN技术，则所述核心网SDN控制器则为5G网络中的SDN控制器。
第二方面，本发明实施例提供了一种业务流传输装置，该装置应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流的情况下，所述装置包括：获取单元，用于获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果；处理单元，用于当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。
结合第二方面，在第二方面的第一种实现方式中，所述获取单元，具体用于接收所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。
结合第二方面，在第二方面的第二种实现方式中，所述获取单元，具体用于接收应用功能设备或网络监控设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
结合第二方面，在第二方面的第三种实现方式中，所述获取单元，具体用于接收应用功能设备发送的所述业务流对应的QoS需求；向核心网业务流传输控制设备发送所述QoS需求；接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
结合第二方面、或者第二方面的第一种、第二种、第三种实现方式中的任意一种，在第二方面的第四种实现方式中，所述处理单元，具体用于在所述用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，获取每个接入方式对应的接入网的网络状态信息；根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。
结合第二方面，或者第二方面的第一种、第二种、第三种、第四种实现方式中的任意一种，在第二方面的第五种实现方式中，所述处理单元确定的所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。
结合第二方面的第五种实现方式，在第二方面的第六种实现方式中，所述处理单元，还用于分别获取第一接入方式和第二接入方式对应的接入网的至少一个链路参数；根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配 比值；根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。
结合第二方面，或者第二方面的第一种、第二种、第三种、第四种、第五种、第六种实现方式中的任意一种，在第二方面的第七种实现方式中，所述处理单元，还用于向核心网业务流传输控制设备发送所述QoS策略，以便于所述核心网业务流传输控制设备根据所述QoS策略确定路由策略。
第三方面，本发明实施例提供了一种业务流传输系统，应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流的情况下，所述系统包括：业务流QoS策略制定设备和核心网业务流传输控制设备，其中：
所述业务流QoS策略制定设备，用于获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果；当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流；向所述核心网业务流传输控制设备发送所述QoS策略；所述核心网业务流传输控制设备，用于接收所述QoS策略并根据所述QoS策略制定路由策略。
结合第三方面，在第三方面的第一种实现方式中，若所述核心网业务流传输控制设备为核心网控制面功能设备，则所述系统还包括核心网软件定义网络SDN控制器，则所述核心网控制面功能设备，还用于向所述核心网SDN控制器发送所述路由策略；所述核心网SDN控制器，用于向所述核心网网关设备转发所述路由策略以使所述核心网网关设备向用户设备发送所述路由策略。
结合第三方面，在第三方面的第二种实现方式中，若所述核心网业务流传输控制设备为核心网SDN控制器，则所述SDN控制器，还用于向核心网网关设备发送所述路由策略，以使所述核心网网关设备向用户设备发送所述路由策略。
结合第三方面，在第三方面的第三种实现方式中，若所述核心网业务流传输控制设备为核心网网关设备，则所述核心网网关设备，还用于向用户设备发送所述路由策略。
结合第三方面的第一种、第二种或第三种实现方式中的任意一种，在第三方面的第四种实现方式中，所述核心网网关设备，还用于当通过第二接入方式对应的接入网向用户设备发送数据包时，判断用户设备通过所述第二接入方式接入网络时获取的IP地址与通过所述第一接入方式接入网络时获取的IP地址是否相同；如果不同，则在待发送数据包的外层增加报头后发送所述数据包，增加的所述报头中的目的IP地址为用户设备在通过所述第二接入方式接入网络时获取的IP地址；在接收到用户设备通过所述第二接入方式对应的接入网发送的数据包时，对所述数据包进行解封装，获取所述数据包的内层报头的源IP地址，当所述内层报头的源IP地址与用户设备通过所述第一接入方式接入网络时获取的IP地址相同时，丢弃数据包的外层报头后转发所述数据包。
第四方面，本发明实施例提供一种业务流QoS策略制定设备，该设备能够实现上述方法实际中业务流QoS策略制定设备的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，业务流QoS策略制定设备中包括：处理器和存储器，所述存储 器用于存储支持业务流QoS策略制定设备执行上述方法的应用程序代码，所述处理器被配置为用于执行所述存储器中存储的应用程序。所述业务流QoS策略制定设备还可以包括通信接口，用于业务流QoS策略制定设备与其他设备或通信网络通信。
第五方面，本发明实施例提供一种计算机存储介质，用于储存为上述业务流QoS策略制定设备所用的计算机软件指令，其包含用于执行上述方面为业务流QoS策略制定设备所设计的程序。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中提供的MPTCP层的结构示意图；
图2为现有技术中提供的利用MPTCP协议传输业务流的流程示意图；
图3为本发明实施例提供的一种业务流传输系统的结构示意图；
图4为本发明实施例提供的一种计算机设备的结构示意图；
图5为本发明实施例提供的一种业务流传输方法的流程示意图；
图6为本发明实施例提供的一种核心网网关设备和用户设备执行路由策略的流程示意图；
图7为本发明实施例提供的一种业务流QoS制定设备的结构示意图。
具体实施方式
下面将结合本实施例中的附图，对本实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
目前，用户设备可通过越来越多的接入方式接入网络中，较常见的，用户设备可通过无线保真(WIreless-Fidelity，Wi-Fi)、无线接入网(Radio Access Network，RAN)等接入方式接入网络中，未来不排除用户设备还可通过其他方式接入网络。在这种情况下，可能存在这样的应用场景：用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为用户设备仅通过第一接入方式对应的接入网传输的业务流，或仅通过第一接入方式对应的接入网发起建立的新业务流。
其中，本申请所涉及到的用户设备UE可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备,以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile station,MS)，终端(terminal)，终端设备(Terminal Equipment)，软终端等等。为方便描述，本申请中，上面提到的设备统称为用户设备或UE。
本发明实施例所指的网络可以为无线网络，如4G、5G网络等；本发明实施例所指的接 入网络是指用户设备与不同接入方式对应的接入点建立连接，并通过接入点完成到核心网控制面的附着(attach)、鉴权、IP地址分配等过程。第一接入方式和第二接入方式是指任意两种不同的接入方式，除了第一接入方式、第二接入方式，用户设备还可能通过第三接入方式、第四接入方式等其他接入方式接入网络。本发明实施例所指的“第一”、“第二”、“第三”等仅仅是为了区分不同的接入方式，并不指代特定的接入方式，也并不限定不同接入方式的顺序。
本发明实施例所指的通过第一接入方式对应的接入网传输的业务流是指，用户设备已经通过第一接入方式对应的接入网为业务流建立承载并利用已建立的承载进行传输的业务流；通过第一接入方式对应的接入网发起建立的新业务流是指用户设备通过第一接入方式对应的接入网发起建立、但尚未进行传输、处于建立过程中的新业务流。实际应用中，用户设备分别通过不同接入方式接入网络的过程中，网络侧设备能够获知用户设备通过了哪些接入方式接入网络、获取的IP地址等信息；在用户设备发起业务流的建立过程中，网络侧设备能够获知业务流的标识等属性信息。因此，网络侧设备(如业务流QoS策略制定设备)能够确定用户设备是否通过多种接入方式接入网络以及用户设备正在传输或正在发起建立的业务流的标识等属性信息。例如：用户设备通过5G RAN这种接入方式接入5G网络，这里的接入具体指用户设备首先接入5G基站，并完成到5G核心网控制面功能设备的附着、鉴权、IP地址分配、承载建立等过程，同时5G核心网控制面功能设备还完成与业务流QoS策略制定设备的交互，使得业务流QoS策略制定设备获知用户设备的接入类型、IP地址等信息。同样，当用户设备通过Wi-Fi这一接入方式接入5G网络时，业务流QoS策略制定设备能够获知用户设备接入网络的接入类型、获取的IP地址等信息。
示例性的，本发明实施例的应用场景可以为在用户设备分别通过Wi-Fi和RAN两种接入方式接入网络中，且用户设备仅通过RAN对应的接入网或仅通过Wi-Fi对应的接入网发起新业务流的建立过程中；还可以为在用户设备分别通过Wi-Fi和RAN两种接入方式接入网络中，且用户设备仅通过RAN对应的接入网或仅通过Wi-Fi对应的接入网传输已建立的业务流的过程中。
在上述应用场景下，可能存在由于第一接入方式对应的接入网的网络状态较差带来的业务流的服务质量(Quality of Service，QoS)需求无法得到较好的满足，进而导致业务流的传输效率较低的问题。
如图3所示，本发明实施例提供一种业务流传输系统，可应用于上述应用场景中，具体包括：业务流QoS策略制定设备101和核心网业务流传输控制设备102。
其中，业务流QoS策略制定设备101主要用于制定业务流的QoS策略。该业务流QoS策略制定设备可以通过硬件实现，也可以通过硬件执行相应的软件实现。实际应用中，当应用在4G网络中时，该业务流QoS策略制定设备可以为4G网络架构中的PCRF。当应用在5G网络中时，该业务流QoS策略制定设备可以为5G网络架构中实现QoS策略制定和调整功能的模块或实体，例如：5G网络中应用了NFV技术后，用于实现QoS策略制定和调整功能可能通过位于通用硬件设备上的软件模块实现，则业务流QoS策略制定设备为该位于通用硬件设备上的软件模块。
核心网业务流传输控制设备102主要用于接收业务流QoS策略制定设备制定的QoS策略，并根据该QoS策略制定路由策略，可以为核心网控制面功能设备、核心网软件定义网 络SDN控制器或核心网网关设备中的任意一种。实际应用中，当所述业务流传输方法应用在4G网络中时，所述核心网控制面功能设备为MME；所述核心网网关设备为PGW，如果4G网络中应用了SDN技术，则所述核心网SDN控制器则为4G网络中的SDN控制器。因此，该核心网业务流传输控制设备可以为4G网络中的MME、PGW或SDN控制器中的任意一种。当所述业务流传输方法应用在5G网络中时，所述核心网控制面功能设备为核心网控制面功能模块，该模块可类比于4G网络中的MME，用于实现连接管理、鉴权和安全以及移动性管理等功能；所述核心网网关设备为具有控制面功能的核心网网关模块。同样，如果5G网络中应用了SDN技术，则所述核心网SDN控制器则为5G网络中的SDN控制器。因此，该核心网业务流传输控制设备可以为5G网络中的核心网控制面功能模块、核心网网关模块或SDN控制器中的任意一种。
如图4所示，图3中的业务流QoS策略制定设备可以以图4中的计算机设备(或系统)的方式来实现。
图4所示为本发明实施例提供的计算机设备示意图。计算机设备200包括至少一个处理器201，通信总线202，存储器203以及至少一个通信接口204。
处理器201可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。
通信总线202可包括一通路，在上述组件之间传送信息。所述通信接口204，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(RAN)，无线局域网(Wireless Local Area Networks，WLAN)等。
存储器203可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。
其中，所述存储器203用于存储执行本发明方案的应用程序代码，并由处理器201来控制执行。所述处理器201用于执行所述存储器203中存储的应用程序代码。
在具体实现中，作为一种实施例，处理器201可以包括一个或多个CPU，例如图4中的CPU0和CPU1。
在具体实现中，作为一种实施例，计算机设备200可以包括多个处理器，例如图4中的处理器201和处理器207。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，计算机设备200还可以包括输出设备205和输入设备206。输出设备205和处理器201通信，可以以多种方式来显示信息。例如，输出设备205可以是液晶显示器(liquid crystal display，LCD),发光二级管(light emitting diode，LED) 显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备206和处理器201通信，可以以多种方式接受用户的输入。例如，输入设备206可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的计算机设备200可以是一个通用计算机设备或者是一个专用计算机设备。在具体实现中，计算机设备200可以是台式机、便携式电脑、网络服务器、掌上电脑(Personal Digital Assistant，PDA)、移动手机、平板电脑、无线终端设备、通信设备、嵌入式设备或有图4中类似结构的设备。本发明实施例不限定计算机设备200的类型。
如图3中的业务流QoS策略制定设备101可以为图4所示的设备，业务流QoS策略制定设备101的存储器中存储了一个或多个软件模块。业务流QoS策略制定设备101可以通过处理器以及存储器中的程序代码来实现软件模块，实现在仅通过一种接入方式对应的接入网传输业务流无法满足业务流的QoS需求的情况下，确定QoS策略以通过两种或两种以上接入网传输所述业务流。
如图5所示，本发明实施例提供了一种网络架构，该网络架构中至少包括第一接入点和第二接入点、业务流QoS策略制定设备、核心网控制面功能设备、核心网网关设备、SDN控制器。该网络架构可以为4G网络的网络架构，则如前文所述，核心网控制面功能设备、核心网网关设备、SDN控制器分别相当于4G网络中的MME、PGW和SDN控制器。该网络架构可以为5G网络的网络架构，则如前文所述，核心网控制面功能设备、核心网网关设备、SDN控制器可通过在通用设备上的软件模块实现。下文以本发明实施例提供的业务流传输方法应用在上述网络架构中，且图3中的业务流QoS策略制定设备101为该网络架构中的业务流QoS策略制定设备，图3中的核心网业务流传输控制设备102可以为该网络架构中的核心网控制面功能设备、核心网网关设备、SDN控制器三者中的任意一种为例进行说明。图3中业务流QoS策略制定设备101和核心网业务流传输控制设备102之间的交互，或者与外部网元之间的交互，可以采用该方法实施例中的方法。
如图5所示，在用户设备分别通过第一接入方式和第二接入方式接入网络，且用户设备通过第一接入方式对应的接入网传输已建立的业务流或发起建立新业务流的情况下，该方法包括：
301：业务流QoS策略制定设备获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果。
其中，所述服务质量QoS需求包括所述业务流对传输带宽、丢包率和时延等一个或多个QoS参数的设定要求。具体而言，不同类型的业务流对传输带宽、丢包率、时延等QoS参数的要求不同。例如：会话类和流媒体类业务对时延要求较高，对带宽需求也较高；而WWW、Email、(File Transfer Prot，FTP)业务和新闻服务等业务对时延要求不高。
在本步骤的具体实现过程中，业务流QoS策略制定设备可通过以下三种实现方式获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
其中，第一种实现方式为：业务流QoS策略制定设备接收其他设备发送的所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；业务流QoS策略制定设备再根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。
其中，该实现方式中所指的网络状态信息可以包括空口负载情况、资源使用情况如链路带宽使用率和数据链路拥塞情况等信息。其他设备可以为一种应用面的设备：应用功能(Application Function，AF)设备。在业务流建立过程中，用户设备和网络中应用面的设备协商所需的QoS需求，此过程可参考现有技术，本发明实施例不再赘述。因而，应用功能设备保存有业务流对应的QoS需求。实际应用中，应用功能设备可以为代理呼叫会话控制功能(Proxy-Call Session Control Funtion，P-CSCF)设备，该设备能够向业务流QoS策略制定设备传递动态的业务状态信息等。其他设备还可以为应用功能设备和网络监控设备两个设备，其中，应用功能设备用于向业务流QoS策略制定设备发送所述业务流对应的QoS需求，其具体功能和实现见前文所述；网络监控设备相当于设置在网络各段的探针，可通过复制并分析用户面数据特征来评估当前业务流的实际传输状态，并向业务流QoS策略制定设备发送该状态信息。在该实现方式中，业务流QoS策略制定设备从其他设备接收QoS需求和网络状态信息后，其自身具有判断的能力，可根据第一接入方式对应的接入网的网络状态信息和所述业务流的QoS需求，判断仅通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求。当第一接入方式对应的接入网的空口负载较大、资源使用较多或链路较拥塞时，可以得到仅通过第一接入方式对应的接入网传输业务流，无法满足业务流的QoS需求的判断结果。
第二种实现方式为：业务流QoS策略制定设备接收应用功能设备或网络监控设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。在该实现方式中，业务流QoS策略制定设备直接从应用功能设备或网络监控设备获取最终的判断结果，其自身无需进行判断，这样能够减少业务流QoS策略制定设备的负荷。
第三种实现方式为：业务流QoS策略制定设备接收应用功能设备发送的所述业务流对应的QoS需求；向核心网业务流传输控制设备发送所述QoS需求；接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。实际应用中，可能存在业务流QoS策略制定设备负荷较大或者不具备进行判断的能力，则在这种情况下，业务流QoS策略制定设备从应用功能设备获取业务流对应的QoS需求后转发给核心网业务流传输控制设备，并由核心网业务流传输控制设备进行判断后，把判断结果发送给业务流QoS策略制定设备。通过该实现方式，也能够减少业务流QoS策略制定设备的负荷。
需要说明的是，在第二种和第三种实现方式中，判断通过第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的执行主体分别为应用功能设备、网络监控设备和核心网业务流传输控制设备，该判断的具体实现过程可参考第一种实现方式中以业务流QoS策略制定设备为执行主体时的实现过程。
302：当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，业务流QoS策略制定设备确定所述业务流的QoS策略。
其中，本步骤302中所指的确定所述业务流的QoS，可理解为两层含义，具体为：当业务流为已经建立且通过第一接入方式对应的接入网进行传输的业务流时，这表明已经为该业务流建立了承载，下发了QoS策略，则确定QoS策略是指调整QoS策略，得到一个调整后的QoS策略；当业务流为处于建立过程中，尚未建立完成的新业务流时，则确定QoS 策略是指用户设备和网络侧应用面设备协商确定QoS需求，并根据QoS需求和网络状况制定QoS策略的过程。
其中，步骤302中所指的所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。也即，为已经建立的业务流调整QoS策略后，调整后的QoS策略用于将已有的仅通过一种接入方式对应的接入网传输业务流的传输方式调整为通过两种接入方式对应的接入网并行传输。或者，为正在建立过程中的新业务流制定QoS策略时，不同于现有技术中不考虑网络状况和业务流的QoS需求，仅指示通过一种接入方式对应的接入网传输业务流，本发明实施例制定的QoS策略用于指示通过两种接入方式对应的接入网传输业务流。需要说明的是，此处的第一接入方式和第二接入方式不限定特定的接入方式，应当理解为任意两种；此处确定的QoS策略也不限定仅通过两种接入方式对应的接入网传输业务流，应当理解为两种或两种以上。
可选的，在本步骤的一种实现方式中，在用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，为了提高传输效率和接入网带宽利用率，需要从所述至少三种接入方式对应的接入网中选取网络状况较好的两种或两种以上接入网来传输所述业务流。以选取两种接入方式对应的接入网传输业务流为例，在确定所述业务流的QoS策略这一步骤的一种实现方式中，业务流QoS策略制定设备获取每个接入方式对应的接入网的网络状态信息；根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。
其中，在确定优先级时，可综合考虑各个接入网的负荷、链路带宽使用率等与网络状态相关的信息，并按照网络状态的好坏确定各个接入方式的优先级，在确定了优先级后，将优先级较好的两个接入接入方式对应的接入网确定为用于传输业务流的接入网。
可选的，在本步骤的另一种实现方式中，由于用户设备已经通过一种接入方式对应的接入网发起新业务流的建立，表明用户设备可能已经通过该接入网完成了业务流初步建立所需的过程，或者用户设备已经在通过一种接入方式对应的接入网传输已有的业务流，表明用户设备已经通过该接入方式对应的接入网建立起业务流对应的承载等建立业务流所需的全部过程，为了简化确定QoS策略后的如承载建立更新等过程，尽快开始业务流的传输过程以提高传输效率，确定的QoS策略中所指的多种接入方式至少包括用户设备初始发起业务流的建立所对应的接入方式或已经用于传输业务流的接入方式。
303：业务流QoS策略制定设备向核心网业务流传输控制设备发送所述QoS策略。
需要说明的是，上述业务流QoS策略制定设备的动作可以由如图4所示的计算机设备根据上述提及的存储器中的软件程序来执行。
304：业务流传输控制设备根据QoS策略确定路由策略。
需要说明的是，当应用在图5所示的网络架构中时，业务流传输控制设备具体可为核心网控制面功能设备、核心网网关设备或SDN控制器中的任意一种，因此，图5中示出了业务流传输控制设备为上述三种设备中的任意一种时，步骤303和步骤304的具体实现方式，但未示出步骤303和步骤304。
如图5所示，在步骤303和步骤304的一种实现方式中，如果所述系统中包括核心网控制面功能设备、SDN控制器和仅具有数据面的路由转发功能而不具备控制面功能的核心 网网关，则图3中所示的核心网业务流传输控制设备可以为核心网控制面功能设备。则该步骤303可以表述为303a：业务流QoS策略制定设备向核心网控制面功能设备发送所述QoS策略。步骤304为步骤304a：核心网控制面功能设备根据调整后的QoS策略确定路由策略。且在步骤304a之后，所述方法还包括步骤305a：所述核心网控制面功能设备向所述核心网SDN控制器发送所述路由策略。306a：所述核心网SDN控制器向所述核心网网关设备转发所述路由策略。307a：所述核心网网关设备向用户设备发送所述路由策略。
或者，仍然是在该系统架构下，图3中所示的核心网业务流传输控制设备可以为核心网SDN控制器。该步骤303可以表述为303b：业务流QoS策略制定设备向核心网SDN控制器发送所述QoS策略。步骤304为步骤304b：核心网SDN控制器根据QoS策略确定路由策略。且在步骤304b之后，所述方法还包括步骤305b：所述核心网SDN控制器向所述核心网网关转发所述路由策略。306b：所述核心网网关向用户设备发送所述路由策略。
在本步骤的另一种实现方式中，如果所述系统中包括核心网控制面功能设备、和仅具有数据面的路由转发功能而不具备控制面功能的核心网网关设备，而不包括核心网SDN控制器，则图3中所示的核心网业务流传输控制设备可以为核心网控制面功能设备。该步骤303可以表述为303c：业务流QoS策略制定设备向核心网控制面功能设备发送所述QoS策略。步骤304为步骤304c：核心网控制面功能设备根据QoS策略确定路由策略。且在步骤304c之后，所述方法还包括步骤305c：所述核心网控制面功能设备向核心网网关设备转发所述路由策略。306c：所述核心网网关设备向用户设备发送所述路由策略。
在本步骤的再一种实现方式中，如果所述系统中包括核心网控制面功能设备和具有控制面功能的核心网网关，而不包括核心网SDN控制器，则图3中所示的核心网业务流传输控制设备可以为所述核心网网关。步骤303可以表述为303d：业务流QoS策略制定设备向核心网网关发送所述QoS策略。步骤304为步骤304d：核心网网关根据调整后的QoS策略确定路由策略。且在步骤304d之后，所述方法还包括步骤305d：所述核心网网关向用户设备发送所述路由策略。
在上述步骤305a、305b、305c或305d之后，在网关设备执行路由策略的过程中，当接收到来自网络侧设备的下行数据包时，网关设备将收到的下行数据包按照传输带宽的分配比值进行拆分，将拆分后的数据包分别通过不同接入方式对应的接入网进行传输。当接收到来自用户设备侧的上行数据包时，网关设备将来自同一业务流，但通过不同接入网传输的上行数据包进行合并。与网关设备相对应，用户设备也执行新的路由策略，对于上行数据包进行拆分然后通过不同接入方式对应的接入网进行传输，对于下行数据包进行合并。
需要说明的是，在步骤304的具体实现过程中，核心网业务流传输控制设备还需要决策是否需要建立新的承载。例如：用户设备分别通过Wi-Fi接入点和RAN接入网络，则核心网业务流传输控制设备决策是否需要建立新的承载；当Wi-Fi接入点还没有到网关的承载，则需要发起建立承载的过程。
本发明实施例提供的业务流传输方法，在用户设备至少通过两种接入方式接入网络中，且仅通过一种接入方式对应的接入网传输已有业务流或建立新业务流无法满足业务流的QoS需求的情况下，业务流QoS策略制定设备确定用于指示通过两种接入方式对应的接入网传输业务流的QoS策略。与现有技术中采用MPTCP协议进行业务流传输相比，本发明提供的业务流传输方法，在当前网络(第一接入方式对应的接入网)的网络状况较差，无 法满足业务流的QoS需求的情况下，确定业务流的QoS策略，使得根据网络情况使业务流能够同时在两个接入方式对应的接入网并行传递，减轻当前网络的网络负荷，进而提高业务流传输效率。
可选的，作为上述方法的补充或者说明，在步骤302的另一种实现方式中，所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。因此，在所述确定所述业务流的QoS策略的一种实现方式中，还需要包括分别确定第一接入方式和第二接入方式对应的传输带宽的过程，具体为：分别获取第一接入方式和第二接入方式对应的接入网的至少一个链路参数；根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配比值；根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。示例性的，获取的链路参数包括往返时间(Round Trip Time，RTT)、抖动、丢包率三个链路参数，且这三个链路参数的权重分别为0.8、0.1、0.1。当第二接入方式对应的接入网的RTT为第一接入方式对应的接入网的RTT的2倍，第二接入方式对应的接入网的抖动为第一接入方式对应的接入网的抖动的1.5倍，第二接入方式对应的接入网的丢包率为第一接入方式对应的接入网的丢包率的0.5倍时，则第二接入方式对应的接入网的传输带宽与第一接入方式对应的接入网的传输带宽的分配比值为：0.8*2+0.1*1.5+0.1*0.5＝1.8，则在确定传输带宽时，为第二接入方式对应的接入网确定的传输带宽为第一接入方式对应的接入网的传输带宽的1.8倍。通过该实现方式，根据两个接入方式对应的接入网的链路状况分配传输带宽，使得链路状况较好的接入网传输更多的数据，能够提高网络传输带宽。
可选的，在步骤302的其他实现方式中，除了分别确定业务流通过每个接入方式对应的接入网传输时的传输带宽，还要分别确定业务流通过每个接入方式对应的接入网传输时的时延和丢包率等QoS参数的取值。具体确定时延和丢包率时，可按照步骤301中获取的业务流的QoS需求中，对时延和丢包率的要求设定。
可选的，实际应用中，需要确定每个接入方式对应的接入网在传输业务流时，对QoS参数的设定要求，以能保证通过不同接入方式对应的接入网有效传输所述业务流。因此，在步骤302的其他实现方式中，所述QoS策略包括所述业务流的属性信息、第一网络属性信息、第一QoS参数集合的取值、第二网络属性信息、第二QoS参数集合的取值。其中，所述业务流属性信息，用于标识所述业务流；所述第一网络属性信息用于标识所述第一接入方式对应的接入网；所述第一QoS参数集合的取值包括至少一个QoS参数的取值，用于表示通过所述第一接入方式对应的接入网传输所述业务流时的各个QoS参数的设定要求；所述第二网络属性信息用于标识所述第二接入方式对应的接入网；所述第二QoS参数集合的取值包括至少一个QoS参数的取值，用于表示通过所述第二接入方式对应的接入网传输所述业务流时的各个QoS参数的设定要求。一般而言，所述QoS参数集合中包括传输带宽、时延和丢包率等QoS参数。示例性的，对于已经建立承载、处于传输过程中的业务流，QoS策略调整前，该业务流对应的QoS策略为：业务流通过RAN接入方式对应的接入网传输，且传输过程中的传输带宽、时延和丢包率分别为传输带宽1、时延1和丢包率1。QoS策略调整后，该业务流对应的QoS策略为：1、业务流通过RAN接入方式对应的接入网传输，且传输过程中的传输带宽、时延和丢包率分别为传输带宽11、时延11和丢包率11以及2、业务流通过Wi-Fi的接入方式对应的接入网传输，且传输过程中的传输带宽、时延和丢包率 分别为传输带宽22、时延22和丢包率22。
实际应用中，可能存在用户设备分别通过不同接入方式接入网络时，获取的IP地址不同的情形。则作为上文所述业务流传输过程的补充，核心网网关设备和用户设备根据已经制定的路由策略进行数据包发送时，采用IPinIP的数据封装方式。
具体的，本发明实施例所指的IPinIP的封装为：在网关设备侧，当网关设备通过第二接入方式对应的接入网向用户设备发送数据包时，判断用户设备通过所述第二接入方式接入网络时获取的IP地址与通过所述第一接入方式接入网络时获取的IP地址是否相同；如果不同，则在待发送数据包的外层增加报头后发送所述数据包，增加的所述报头中的目的IP地址为用户设备在通过所述第二接入方式接入网络时获取的IP地址；在网关设备接收到用户设备通过所述第二接入方式对应的接入网发送的数据包时，对所述数据包进行解封装，获取所述数据包的内层报头的源IP地址，当所述内层报头的源IP地址与用户设备通过所述第一接入方式接入网络时获取的IP地址相同时，丢弃数据包的外层报头后转发所述数据包。
如图6所示，以分别通过第一接入方式和第二接入方式对应的接入网传输业务流为例，当网关设备收到属于同一个业务流的A1、A2以及B三个下行数据包并进行处理时，按照第一接入方式对应的接入网的传输带宽和第二接入方式对应的接入网的传输带宽分配情况，将A1和A2通过第一接入方式对应的接入网向用户设备发送，将数据包B通过第二接入方式对应的接入网向用户设备发送。在发送数据包A1和A2时，可直接向用户设备发送；但在发送数据包B时，由于未进行IPinIP封装前，数据包B的目的IP地址为用户设备通过第一接入方式接入网络时获取的IP地址，而用户设备通过第二接入方式接入网络时获取的IP地址与通过第一接入方式接入网络时获取的IP地址不同，因此，在通过第二接入方式对应的接入网发送数据包B时，需要在数据包B外再封装一个IP头，这个IP头的源地址保留不变，目的地址为用户设备通过第二接入方式接入网络时获取的IP地址，端口号、协议和内层的IP报头相同，这样数据包B能够通过第二接入方式对应的接入网进行传输。数据包B到了用户设备后，用户设备进行解封装，确定数据包B和数据包A1、A2，属于同一业务流，然后对该业务流进行处理。
同理，仍以数据包A1、A2、B为例，用户设备侧在发送数据包时，也会按照上述处理过程将同一业务流的数据包进行拆分以分别通过不同接入方式对应的接入网进行传输。这样，当网关设备收到用户设备通过第一接入方式对应的接入网发送的A1、A2，以及用户设备通过第二接入方式对应的接入网发送的数据包B时，由于用户设备在发送时，对数据包B封装了IP报头(该IP报头称为外层IP报头)，该IP报头的源IP地址为用户设备通过第二接入方式接入网络时获取的IP地址；而数据包B未封装前的报头(该IP报头称为内层IP报头)为用户设备通过第一接入方式接入网络时获取的IP地址。因此网关设备需要对接收的数据包B进行解封装，当数据包B的内层IP地址为用户设备通过第一接入方式接入网络时获取的IP地址时，将数据包B与A1、A2确定为属于同一业务流后传输。
如图7所示，本发明实施例还提供了一种业务流QoS制定设备的结构示意图，应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流的情况下，包括：获取单元401和处理单元402。
其中，获取单元401，用于获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果。
处理单元402，用于当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。
进一步的，所述获取单元401，具体用于接收所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。
进一步的，所述获取单元401，具体用于接收应用功能设备或网络监控设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
进一步的，所述获取单元401，具体用于接收应用功能设备发送的所述业务流对应的QoS需求；向核心网业务流传输控制设备发送所述QoS需求；接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
进一步的，所述处理单元402，具体用于在所述用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，获取每个接入方式对应的接入网的网络状态信息；根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。
进一步的，所述处理单元402确定的所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。
进一步的，所述处理单元402，还用于分别获取第一接入方式和第二接入方式对应的接入网的至少一个链路参数；根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配比值；根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。
进一步的，所述处理单元402，还用于向核心网业务流传输控制设备发送所述QoS策略，以便于所述核心网业务流传输控制设备根据所述QoS策略确定路由策略。
采用上述方案后，在用户设备至少通过两种接入方式接入网络中，且仅通过一种接入方式对应的接入网传输已有业务流或建立新业务流无法满足业务流的QoS需求的情况下，业务流QoS策略制定设备确定用于指示通过两种接入方式对应的接入网传输业务流的QoS策略。与现有技术中采用MPTCP协议进行业务流传输相比，本发明提供的业务流传输装置，在当前网络(第一接入方式对应的接入网)状况较差，无法满足业务流的QoS需求的情况下，确定业务流的QoS策略，使得能够根据网络状况使业务流能够同时在两个接入方式对应的接入网并行传递，能够减轻当前网络的网络负荷，进而提高业务流传输效率。
在本实施例中，业务流QoS策略制定设备是以功能单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到业务流QoS策略制定设备可以采用图4所示的形式。获取单元401和处理单元402可以通过图4的处理器和存储器来实现。
本发明实施例还提供了一种计算机存储介质，用于储存为上述图7所示的业务流QoS策略制定设备所用的计算机软件指令，其包含用于执行上述方法实施例所设计的程序。通过执行存储的程序，可以实现通过两种接入方式对应的接入网传输业务流。
本发明实施例还提供了另一种计算机存储介质，用于储存为上述核心网业务流传输控制设备所用的计算机软件指令，其包含用于执行上述方法实施例所设计的程序。通过执行存储的程序，可以实现通过两种接入方式对应的接入网传输业务流。
尽管在此结合各实施例对本发明进行了描述，然而，在实施所要求保护的本发明过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
本领域技术人员应明白，本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。计算机程序存储/分布在合适的介质中，与其它硬件一起提供或作为硬件的一部分，也可以采用其他分布形式，如通过Internet或其它有线或无线电信系统。
本发明是参照本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管结合具体特征及其实施例对本发明进行了描述，显而易见的，在不脱离本发明的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本发明的示例性说明，且视为已覆盖本发明范围内的任意和所有修改、变化、组合或等同物。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。

Claims (22)

  1. 一种业务流传输方法，应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流情况下，其特征在于，所述方法包括：
    获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果；
    当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。
  2. 根据权利要求1所述的方法，其特征在于，所述获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果，具体包括：
    接收所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；
    根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。
  3. 根据权利要求1所述的方法，其特征在于，所述获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果，具体包括：
    接收应用功能设备或网络监控设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
  4. 根据权利要求1所述的方法，其特征在于，所述获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果，具体包括：
    接收应用功能设备发送的所述业务流对应的QoS需求；
    向核心网业务流传输控制设备发送所述QoS需求；
    接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，在所述用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，所述确定所述业务流的QoS策略，具体包括：
    获取每个接入方式对应的接入网的网络状态信息；
    根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；
    将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。
  7. 根据权利要求6所述的方法，其特征在于，所述确定所述业务流的QoS策略，具体还包括：
    分别获取第一接入方式和第二接入方式对应的接入网的至少一个链路参数；
    根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配比值；
    根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。
  8. 根据权利要求1至7任一项所述的方法，其特征在于，所述确定所述业务流的QoS策略之后，所述方法还包括：
    向核心网业务流传输控制设备发送所述QoS策略，以便于所述核心网业务流传输控制设备根据所述QoS策略确定路由策略。
  9. 根据权利要求4或8所述的方法，其特征在于，所述核心网业务流传输控制设备为核心网控制面功能设备、核心网软件定义网络SDN控制器或核心网网关设备。
  10. 一种业务流传输装置，应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流情况下，其特征在于，所述装置包括：
    获取单元，用于获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的服务质量QoS需求的判断结果；
    处理单元，用于当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流。
  11. 根据权利要求10所述的装置，其特征在于，
    所述获取单元，具体用于接收所述业务流对应的QoS需求和所述第一接入方式对应的接入网的网络状态信息；
    根据所述网络状态信息和所述QoS需求，判断通过所述第一接入方式对应的接入网传输所述业务流是否能够满足所述QoS需求，得到判断结果。
  12. 根据权利要求10所述的装置，其特征在于，
    所述获取单元，具体用于接收应用功能设备或网络监控设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
  13. 根据权利要求10所述的装置，其特征在于，
    所述获取单元，具体用于接收应用功能设备发送的所述业务流对应的QoS需求；
    向核心网业务流传输控制设备发送所述QoS需求；
    接收所述核心网业务流传输控制设备发送的所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果。
  14. 根据权利要求10至13任一项所述的装置，其特征在于，
    所述处理单元，具体用于在所述用户设备通过包括第一接入方式和第二接入方式的至少三种接入方式接入网络的情况下，获取每个接入方式对应的接入网的网络状态信息；
    根据每个接入方式对应的接入网的网络状态信息，确定每个接入方式的优先级；
    将优先级大于预设阈值的第一接入方式和第二接入方式对应的接入网确定为用于传输所述业务流的接入网。
  15. 根据权利要求10至14任一项所述的装置，其特征在于，
    所述处理单元确定的所述QoS策略还用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流时的传输带宽。
  16. 根据权利要求15所述的装置，其特征在于，
    所述处理单元，还用于分别获取第一接入方式和第二接入方式对应的接入网的至少一个 链路参数；
    根据各个链路参数的预设权重，确定第一接入方式和第二接入方式对应的接入网的传输带宽分配比值；
    根据所述传输带宽分配比值分别确定第一接入方式和第二接入方式对应的接入网的传输带宽。
  17. 根据权利要求10至16任一项所述的装置，其特征在于，
    所述处理单元，还用于向核心网业务流传输控制设备发送所述QoS策略，以便于所述核心网业务流传输控制设备根据所述QoS策略确定路由策略。
  18. 一种业务流传输系统，应用于用户设备至少通过第一接入方式和第二接入方式接入网络，且业务流为通过所述第一接入方式对应的接入网传输或发起建立的业务流的情况下，其特征在于，所述系统包括：业务流QoS策略制定设备和核心网业务流传输控制设备，其中：
    所述业务流QoS策略制定设备，用于获取所述第一接入方式对应的接入网传输所述业务流是否能够满足所述业务流对应的QoS需求的判断结果；
    当所述判断结果为通过所述第一接入方式对应的接入网传输所述业务流无法满足所述QoS需求时，确定所述业务流的QoS策略，所述QoS策略用于指示分别通过第一接入方式和第二接入方式对应的接入网传输所述业务流；
    向所述核心网业务流传输控制设备发送所述QoS策略；
    所述核心网业务流传输控制设备，用于接收所述QoS策略并根据所述QoS策略制定路由策略。
  19. 根据权利要求18所述的系统，其特征在于，若所述核心网业务流传输控制设备为核心网控制面功能设备，则所述系统还包括核心网软件定义网络SDN控制器，
    则所述核心网控制面功能设备，还用于向所述核心网SDN控制器发送所述路由策略；
    所述核心网SDN控制器，用于向所述核心网网关设备转发所述路由策略，以使所述核心网网关设备向用户设备发送所述路由策略。
  20. 根据权利要求18所述的系统，其特征在于，若所述核心网业务流传输控制设备为核心网SDN控制器，则所述SDN控制器，还用于向核心网网关设备发送所述路由策略，以使所述核心网网关设备向用户设备发送所述路由策略。
  21. 根据权利要求18所述的系统，其特征在于，若所述核心网业务流传输控制设备为核心网网关设备，则所述核心网网关设备，还用于向用户设备发送所述路由策略。
  22. 根据权利要求19至21任一项所述的系统，其特征在于，所述核心网网关设备，还用于当通过第二接入方式对应的接入网向用户设备发送数据包时，判断用户设备通过所述第二接入方式接入网络时获取的IP地址与通过所述第一接入方式接入网络时获取的IP地址是否相同；如果不同，则在待发送数据包的外层增加报头后发送所述数据包，增加的所述报头中的目的IP地址为用户设备在通过所述第二接入方式接入网络时获取的IP地址；
    在接收到用户设备通过所述第二接入方式对应的接入网发送的数据包时，对所述数据包进行解封装，获取所述数据包的内层报头的源IP地址，当所述内层报头的源IP地址与用户设备通过所述第一接入方式接入网络时获取的IP地址相同时，丢弃数据包的外层报头后转发所述数据包。
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