WO2013152472A1 - 通信方法与系统,以及接入网设备与应用服务器 - Google Patents

通信方法与系统,以及接入网设备与应用服务器 Download PDF

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Publication number
WO2013152472A1
WO2013152472A1 PCT/CN2012/073666 CN2012073666W WO2013152472A1 WO 2013152472 A1 WO2013152472 A1 WO 2013152472A1 CN 2012073666 W CN2012073666 W CN 2012073666W WO 2013152472 A1 WO2013152472 A1 WO 2013152472A1
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WIPO (PCT)
Prior art keywords
application server
service
access network
network device
protocol
Prior art date
Application number
PCT/CN2012/073666
Other languages
English (en)
French (fr)
Inventor
吕欣岩
邢峰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2014532223A priority Critical patent/JP5873179B2/ja
Priority to PCT/CN2012/073666 priority patent/WO2013152472A1/zh
Priority to KR1020147001146A priority patent/KR101521954B1/ko
Priority to CN201280000731.5A priority patent/CN103548314B/zh
Priority to EP12874308.5A priority patent/EP2717538B1/en
Priority to US13/848,453 priority patent/US9532238B2/en
Publication of WO2013152472A1 publication Critical patent/WO2013152472A1/zh
Priority to US15/373,118 priority patent/US9860787B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0894Policy-based network configuration management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the embodiments of the present invention relate to the field of mobile communications technologies, and in particular, to a communication method and system, and an access network device and an application server. Background technique
  • a user equipment In the field of mobile communication technologies, a user equipment (UE) needs to establish a connection with an external network (for example, the Internet) through a wireless network, and then enjoy the service of the third-party application service through an external network or a remote server.
  • an external network for example, the Internet
  • the wireless network mainly includes an access network 110 and a core network (Core) 120.
  • the management function for the radio resources is mainly concentrated on the access network 110, and the functions related to services and applications are mainly concentrated.
  • the access network 110 is a bridge connecting the UE 130 and the core network 120.
  • the service interaction between the UE 130 and the external network needs to be based on the connection between the UE, the access network and the core network, and finally implemented by the gateway 121 on the core network side. Since the remote server 140 is located behind the gateway 121 of the core network and away from the UE 130, the service delay and the quality of service (QoS) are low, which affects the user experience.
  • QoS quality of service
  • the embodiments of the present invention provide a communication method and system, and an access network device and an application server, to solve problems such as extended service delay and low service QoS, thereby improving user experience.
  • the embodiment of the present invention provides a communication method, including: an access network device receives a service packet; the access network device sends a received service packet to an application server according to a policy, where the application server is configured to connect The network access side is independent of the access network device or is disposed in the access network device, and the application server supports at least one service operation.
  • the embodiment of the present invention provides a communication method, including: an application server receiving a service packet sent by an access network device, where the application server is configured on an access network side, independent of the access network device or setting Within the access network device, the application server supports at least one service operation; the application server processes the service message.
  • an embodiment of the present invention provides an access network device, including: a first interface unit configured to communicate with a user equipment; a second interface unit configured to communicate with a core network; configured to perform with an application server a third interface unit of the communication, wherein the application server is disposed on the access network side, and is independent of the access network device or is disposed in the access network device, and the application server supports at least one service operation a processor, configured to be connected to the first interface unit, the second interface unit, and the third interface unit, and the processor is configured to receive a service packet by using the first interface unit or the second interface unit, and The third interface unit sends the received service packet to the application server according to the policy.
  • an embodiment of the present invention provides an application server that supports at least one service operation, where the application server is located on the access network side, and is independent of the access network device or is disposed in the access network device.
  • the application server includes: an interface unit for communicating with an access network device; a storage unit, configured to store service data of a service supported by the application server; a processing unit, and the interface unit and the storage unit respectively
  • the processing unit is configured to receive, by the interface unit, a service packet sent by the access network device, and process the service packet.
  • an embodiment of the present invention provides a communication system, where an access network device as described above and an application server as described above are disposed on the access network side.
  • an embodiment of the present invention provides a computer readable storage medium, comprising: a program for executing the method according to any one of claims 1-7.
  • an embodiment of the present invention provides a computer readable storage medium, comprising: a program for executing the method according to any one of claims 8-16.
  • an application server that can support the operation of a third-party application is introduced on the access network side, so that the UE can directly perform service interaction with the access network side, thereby greatly improving the user request.
  • the response time is reduced, the service delay is reduced, and the service QoS is improved, thereby making the user experience better.
  • FIG. 1 is a schematic structural view of a conventional communication system
  • FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an access network device according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an application server according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of another application server processing a service packet according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of an interface protocol between an application and a wireless network according to an embodiment of the present invention.
  • FIG. 8 is a software architecture diagram of an application server according to an embodiment of the present invention
  • FIG. 9 is a flowchart of a communication method according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of another communication method according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of still another communication method according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of an LTE communication system according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of user plane data flow of an LTE communication system according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of a user plane interface of an LTE communication system according to an embodiment of the present disclosure
  • FIG. 15 is a schematic diagram of data flow of a control plane in an LTE communication system according to an embodiment of the present invention.
  • the embodiment of the present invention fully considers the problems existing in the existing third-party application service interaction process, and introduces a logical network element that can support the operation of the third-party application on the access network side, so that the UE can directly perform services with the access network side.
  • the interaction greatly improves the response time of the user request, reduces the service delay, and improves the service QoS, thereby making the user experience better.
  • FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the logical network element introduced on the access network 210 side of the embodiment of the present invention is an application server 212, and the application server 212 supports the operation of at least one service.
  • the application server 212 may be a separate device located outside the access network device 211, or may be integrated into the access network device 211, which is not limited in this embodiment.
  • the access network device 211 needs to add a packet bypass function, and the service packets from the UE 230 or the core network 220 are bypassed to the application server 212 for processing.
  • the original functions of the access network device 211 include the management of radio resources, the forwarding of air interface data, and the maintenance of UE status, which are well known to those skilled in the art, and are not described herein again.
  • the access network device 211 is a device that accesses the UE to the wireless network, including but not limited to: a base station (Node B), an evolved base station (evolved Node B, eNB), and a home base station (Home Node B, HNB) I (Home eNode B, HeNB), wireless network control Radio network controller (RNC), Base Station Controller (BSC), Base Transceiver Station (BTS).
  • Node B Node B
  • eNB evolved base station
  • HNB home base station
  • RNC Radio network controller
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • the third-party applications described in this embodiment include, but are not limited to, web page (Web) class cache (Cache) acceleration, video transcoding, machine-to-machine (M2M) handshake signaling termination, content storage. Release, etc., which can be provided by a third party, and this embodiment does not impose any constraints.
  • the application server 212 can be an open application server, which provides an open platform for third-party application service providers to support the expansion of various third-party applications, thus facilitating further improvement of the user experience.
  • the access network device 211 and the application server 212 are described in more detail below with reference to the accompanying drawings.
  • the access network device 211 includes: a first interface unit 310, a second interface unit 320, a third interface unit 330, and the first interface unit 310, the second interface unit 320, and the third interface, respectively.
  • the unit 330 is connected to the processor 340.
  • the first interface unit 310 is configured to communicate with the UE 230; the second interface unit 320 is configured to communicate with the core network 220; the third interface unit 330 is configured to communicate with the application server 212; and the processor 340 is configured to pass the An interface unit 310 or the second interface unit 320 receives the service packet, and sends the received service packet to the application server 212 according to the policy through the third interface unit 330.
  • the application server 212 supports at least one service operation, and is disposed on the access network side, and may be independent of the access network device 211 or may be disposed in the access network device 211. .
  • the policy for the access network device 211 to send the service packet to the application server 212 includes: transmitting all the service packets received by the access network device 211 to the application server 212; or identifying whether the service packet can be sent to the application server by using the identification information. 212.
  • the service packet that can be sent to the application server 212 is sent to the application server 212, and the service packet that cannot be sent to the application server 212 is sent to the core network 220.
  • the identification information may be some identification information carried by the existing service packet, including but not limited to: a user profile identifier (SPID) Information, QoS class identifier (QCI) information, Stateful Packet Inspection (SPI) information, or Deep Packet Inspection (DPI).
  • SPID user profile identifier
  • QCI QoS class identifier
  • SPI Stateful Packet Inspection
  • DPI Deep Packet Inspection
  • the SPID is a user ID defined by the operator, and the current value ranges from 1 to 256.
  • the specific meaning can be defined by the operator (currently only defined). Some values are used for the camping priority and the inter-frequency/different system switching priority).
  • the operator can pre-define some SPIDs to indicate which bearers or which types of service packets of the user are sent to the application server 212 for processing, so that the access network device 211 can receive the service message according to the SPID of the user. It is determined whether the received service message is sent to the application server 212.
  • the QCI includes 9 levels, and the operator can pre-define which of the 9 levels or which classes of services need to be sent to the application server 212.
  • the access network device 211 can determine whether to send the received service packet to the application server 212 according to the QCI of the service packet after receiving the service packet.
  • the service may be sent to the application server 212 according to the SPI or the DPI for processing:
  • the operator may pre-define the rules for forwarding some service packets to the application server 212, for example, according to the 5-tuple of the message (source)
  • the IP, the destination IP address, the source port, the destination port, and the protocol type are forwarded.
  • the access network device 211 can determine whether the service packet is received according to the forwarding specification. Sent to the application server 212.
  • FIG. 4 is a schematic structural diagram of an application server according to an embodiment of the present invention.
  • the application server 212 supports at least one service operation, and is located on the access network side, and may be independent of the access network device or may be disposed in the access network device.
  • the application server 212 includes an interface unit 410, a storage unit 420, and a processing unit 430 connected to the interface unit 410 and the storage unit 420, respectively.
  • the interface unit 410 is used for connection
  • the network access device 211 performs communication
  • the storage unit 420 is configured to store the service data of the service supported by the application server 212
  • the processing unit 430 is configured to receive the service packet sent by the access network device 211 through the interface unit 410, and process the service packet. .
  • processing unit 430 may be a processor, and the storage unit 420 may be a memory. If the application server 212 is integrated with the access network device 211, the functionality of its processing unit 430 can be implemented at the processor 340 of the access network device 211, i.e., with the access network device 211.
  • the processing procedure of the processing unit 430 corresponding to the service packet changes according to the change of the service packet received by the processing unit 430. Including but not limited to the following:
  • the preset access network device 211 sends a policy of the service packet to the application server 212, that is, according to the service type that the application server 212 can support
  • the service packet of the service supported by the application server 212 is sent to the application server. 212.
  • the application server 212 does not need to make a judgment as to whether or not it supports the received service message.
  • the process of processing the service packet by the processing unit 430 is as shown in FIG. 5, and includes:
  • Step S510 Parsing the service packet, the process of stripping other protocol layer information to obtain the application layer data.
  • Step S520 Run the service corresponding to the service packet according to the parsed service packet.
  • Step S530 Feed the operation result to the access network device.
  • the process of processing the service packet by the processing unit 430 is as shown in FIG. 6. Show, including:
  • S620 Determine, according to the parsed service packet, whether the processing unit supports the operation of the service corresponding to the service packet. If yes, go to step S630; if not, go to step S640, S650 or S660.
  • the analysis result shows that the processing unit supports the service corresponding to the service packet And performing, according to the parsed service packet, the service corresponding to the service packet, and feeding back the operation result to the access network device (step S630); if the parsing result indicates that the processing unit does not support the service report The operation of the service corresponding to the text, the service message is sent back to the access network device (step S640), so that the access network device sends the service packet according to the traditional channel; or sends the service to the core network.
  • a service packet in which case the application server needs to have a direct channel to the core network; or send indication signaling to the access network device (step S660), where the indication signaling is used to indicate the connection
  • the network access device sends the service packet to the core network.
  • the service packet can be sent out according to the traditional channel according to the indication information.
  • the above steps S640, S650, or S660 are provided to ensure that services are provided to the UE in a conventional manner to ensure uninterrupted service.
  • the update data is stored to the storage unit.
  • a user plane channel needs to be established between the access network device 211 and the application server 212.
  • One way is: Set the user plane channel in advance. At this time, only the user plane protocol needs to be defined, so that the service packet is transmitted on the preset user plane channel through the user plane protocol.
  • the protocol of the third interface unit 330 of the access network device 211 and the protocol of the interface unit 410 of the application server 212 interacting therewith are configured, so that the configured protocol is used in the access network device when needed.
  • a user plane channel is established between the 211 and the application server 212 to transmit service packets through the user plane channel.
  • the protocol of the third interface unit 330 and the protocol of the interface unit 410 are both application and wireless network interface protocols, so that a user plane channel is established between the access network device 211 and the application server 212 through the application and the wireless network interface protocol.
  • FIG. 7 is a schematic structural diagram of an application and wireless network interface protocol.
  • the application and wireless network interface protocol includes a control plane protocol 710 and a user plane protocol 720, the user The facet protocol 720 is used for information transmission on the user plane channel, the control plane protocol 710 is used for establishing the user plane channel, and the establishment of the user plane channel includes: establishing control between the access network device and the application server through the control plane protocol A user plane channel is established between the access network device and the application server by controlling information carried by the control plane link.
  • the control plane protocol 710 includes a service network layer protocol and a transport network layer protocol, and its service network layer protocol includes control information; its transport network layer protocol includes a physical layer protocol, a data link layer protocol, a network layer protocol, and a transport layer protocol.
  • the user plane protocol includes a service network layer protocol and a transport network layer protocol, where the service network layer protocol is the same as the existing service network layer protocol for service packet transmission between the UE and the remote server, and the access network pairs the part.
  • the protocol is not processed, and only transparent transmission is known, which is well known to those skilled in the art. This embodiment will not be repeated here; the transport network layer protocol is used to implement the transmission of service packets, and the transport network layer protocol also includes the physical layer. Protocol, Data Link Layer Protocol, Network Layer Protocol, and Transport Layer Protocol.
  • the network layer protocol may be an Internet Protocol (IP); the transport layer protocol may be a Stream Control Transmission Protocol (SCTP), and a transmission control ten ( Transmission Control Protocol (TCP) or User Datagram Protocol (UDP).
  • IP Internet Protocol
  • SCTP Stream Control Transmission Protocol
  • TCP Transmission Control Protocol
  • UDP User Datagram Protocol
  • the network layer protocol may be IP; the transport layer protocol may include a GPRS and a GPRS Tunneling Protocol-User plane (GTP-U), where the GTP-U can be replaced.
  • GTP-U GPRS Tunneling Protocol-User plane
  • control information includes, but is not limited to, a reset message, an open API interface setup request message, a base station configuration update message, and the like, which is exemplified by a Long Term Evolution (LTE) access technology, and other access technologies, such as universal mobile communication.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • the control information includes a status information subscription request message, and the status information subscription request message is used to instruct the access network device to send status information of the wireless network to the application server.
  • Third-party applications can flexibly adjust the processing of service packets based on status information. For example, if the status information indicates that the air interface is congested, the HD video resource can be adjusted to be a normal video resource and sent to the UE. For another example, when most of the service packets involve peer-to-peer (P2P) communication, and only a few involve video services, more wireless resources can be invoked to ensure video quality.
  • P2P peer-to-peer
  • control information includes a policy modification request message, where the policy modification request message is used to instruct the access network device to send a service message to the application server.
  • the operator can flexibly adjust the policy of the access network device to send service packets to the application server according to the requirements of the third-party application.
  • the processor 340 of the access network device 211 is further configured to establish a user plane channel between the access network device 211 and the application server 212 through the third interface unit 330, and the processing unit 430 of the application server 212 is further configured to pass the interface.
  • Unit 410 establishes a user plane channel between access network device 211 and application server 212.
  • the service packet can be from the UE, it can also come from the core network side. Therefore, a user plane channel can be established in the uplink and downlink directions respectively. Of course, an independent user plane channel can also be established. In this case, in order to distinguish whether the service packet is the data of the UE side or the data of the core network side, a direction identifier field is added to the service packet to identify the source direction of the service packet. .
  • the service server supports more than one service.
  • the service text needs to be added with an identifier. Identifies the forwarding destination, that is, identifies which service the service packet needs to be provided to. If the field is not added, the application server needs to identify and distribute the service packet.
  • FIG. 8 is a software architecture of an application server according to an embodiment of the present invention.
  • the processing unit 430 is a Central Processing Unit (CPU), which runs operations through a board support package (BSP). Operating System (OS).
  • OS Operating System
  • a control plane handler, a user plane handler, a third party application, and an Operation Manager (OM) program are run on the platform provided by the OS. among them:
  • Control plane processing program It is used to process the control plane information between the application server and the access network device.
  • the basic management process is used for establishing and maintaining the control plane link between the application server and the access network device;
  • the service bearer management process is used for establishing and maintaining the user plane channel between the application server and the access network device;
  • the status information of the wireless network is subscribed to by the application server (including the status information of the access network device side air interface or the access network device itself), and the status information is reported from the access network device.
  • User plane processing program Provides user plane channel processing between the application server and the access network device, and is used for interaction between the service network device and the application server.
  • Third-party applications Terminate or forward user's application layer data according to specific applications, or provide specific services.
  • OM program Used to coordinate and manage user plane processing, control plane processing, and third-party applications, including at least log/test/version management.
  • the access network devices need to be added with the following functions:
  • the service packet is sent to the application server: If an independent user plane channel is established to each third-party application, only the packet is forwarded to the corresponding user plane channel (if the user channel is established on the uplink and downlink respectively) Then, each channel represents one direction, otherwise it needs to use the direction identification field to identify whether the data is in the direction of the UE or the data in the direction of the core network. If the third-party application shares a user plane channel, you need to add an identifier to the packet (used to identify the destination of the transmission), and then send it; if you do not add the identifier, you need to identify and distribute the packet at the receiving end. Each channel is built up in the uplink and downlink, and each channel represents a direction. Otherwise, the direction identification field is used.
  • each third-party application establishes an independent user plane channel
  • the packet can be sent to the UE or the core network according to the direction (if the uplink and downlink respectively establish a channel, Then each channel represents one direction, otherwise the direction identification field is required).
  • the third-party application shares a user plane channel the packet needs to be forwarded according to the policy.
  • the optional policies include, but are not limited to: forwarding according to the DPI; identifying according to the identifier (used to identify the sending destination-specific bearer) Forwarding (If the UE direction and the core network direction respectively establish a channel, each channel represents one direction, otherwise the direction identification field is also needed.
  • Application server features include:
  • the service packet sent by the access network device is parsed.
  • each third-party application establishes an independent user plane channel, only the packet on the corresponding channel is forwarded to the corresponding
  • each third-party application if a channel is set up for the uplink and the downlink, each channel represents a direction. Otherwise, the direction identifier field is required.
  • the packet forwarding needs to be performed according to a certain policy.
  • the optional policies include, but are not limited to: forwarding according to the DPI; identifying and forwarding according to the forwarding identifier (if a channel is established by uplink and downlink, each channel represents a direction, otherwise the direction identification field is also needed).
  • the packet processing is sent to the access network device, that is, the forwarding of the user plane packet of the third-party application to the user plane channel: if each third-party application establishes an independent user plane channel, only the packet is forwarded to The corresponding channel can be used. (If the channel is set up in the uplink and downlink, each channel represents a direction. Otherwise, the direction identifier field is required.) If the third-party application shares a user plane channel, you need to add an identifier to the packet. Used to identify the forwarding destination), and then forward it. If the identifier is not added, the packet needs to be identified and distributed at the receiving end. Each channel is mapped to a direction in the downlink, otherwise the direction identification field is required.
  • the embodiment of the present invention further provides a communication method, as shown in FIG. 9, including the following steps:
  • S910 The access network device receives the service packet.
  • the access network device sends the received service packet to the application server according to the policy.
  • the application server is configured on the access network side, is independent of the access network device or is disposed in the access network device, and supports at least one service operation.
  • the service packet on the UE side can be forwarded to the application server via the access network device, and processed by the application server.
  • the response of the UE side service packet can be completed on the access network side, thereby greatly improving the response time requested by the user, reducing the service delay, improving the service QoS, and improving the user experience.
  • the service packet received by the access network device may be from the UE side or from the core network side.
  • the policy for the access network device to send the service packet to the application server includes, but is not limited to: sending all the service packets received by the access network device to the application server; or Identifying, by the identification information, whether the service packet can be sent to the application server, and sending a service packet that can be sent to the application server to the application server, and sending a service report that cannot be sent to the application server
  • the text is sent to the core network.
  • the setting of the identification information is the same as the above embodiment, and details are not described herein again.
  • the embodiment of the present invention further provides another communication method. As shown in FIG. 10, the method includes the following steps:
  • the application server receives the service packet sent by the access network device, where the application server is disposed on the access network side, is independent of the access network device or is disposed in the access network device, and the application server supports at least one type Business operation
  • the application server processes the service packet. It can be seen that the application server supporting the running of the service is set on the access network side, and the service packet is received and processed from the access network device. In this way, the response to the UE side service packet can be completed on the access network side, thereby greatly improving the response time requested by the user, reducing the service delay, improving the service QoS, and making the user experience better.
  • the processing procedure of the service packet corresponding to the foregoing step S102 changes according to the change of the service packet received by the application server. This includes, but is not limited to, the processes shown in Figures 5 and 6.
  • the update data is stored to the storage unit.
  • the user plane channel needs to be established between the access network device and the application server.
  • the manner of establishing the user plane channel is the same as that described above, and details are not described herein again.
  • an embodiment of the present invention further provides a communication method, as shown in FIG. 11, including:
  • the access network device receives the service packet sent by the UE or the core network.
  • step S112 The access network device sends the received service packet to the application server according to the policy. Before step S112, a user plane channel needs to be established between the access network device and the application server.
  • the user plane channel can be pre-configured. After the access network device and the application server are powered on, the user plane channel can carry the user plane information.
  • the user plane channel may be established after the access network device and the application server are powered on, or after the access network device receives the service packet that needs to be forwarded to the application server. .
  • the number of user plane channels established may be one or multiple.
  • a user plane channel may be established on each of the uplink and the downlink; or only one user plane channel may be established, and a direction identifier field may be added in the service.
  • a user plane channel can be established for each third-party application; and only one user plane channel shared by all third-party applications is established. The receiving end needs to identify and distribute the received service packet, or add an identifier field identifying the destination in the service packet.
  • S113 The application server processes the service packet.
  • the service message is from the UE, it usually includes the service request of the UE. If the application server has the service resource requested by the UE, the application server sends the service resource to the access network device (S114). If the application server does not have the service resource requested by the UE, the application server sends the service packet back to the access network device, so that the access network device sends the service packet according to the traditional channel (S115); The message is directly sent to the core network, and the application server needs to have a direct channel to the core network (S116); or send indication signaling (S117) to the access network device, where the indication signaling is used to indicate the access network device to The core network sends a service packet. Since the access network device has received the service packet in step S111, the service packet is buffered according to the indication information, and the service packet is sent according to the traditional channel. To provide services to the UE in a traditional manner when the application server is unable to provide services.
  • the service resource is sent to the UE (S118).
  • the service packet is continuously sent to the core network (S119).
  • the service request may continue to be sent to the external network through the core network.
  • the requested service resources are obtained through the external network.
  • the access network device forwards the service resource to the application server, and the application server stores the service resource to update the service resource in the step S113.
  • this update can also be sent to the application server by the external network periodically or in real time via the core network and the access network device.
  • the access network device when it receives the service request of the UE, it sends the service request to the application server. If the application server has the service resource requested by the UE, the application server can directly provide the service for the UE, which greatly shortens the service interaction. The path and the network elements involved in the service interaction are also reduced. Therefore, the service delay is reduced, the service QoS is improved, and the user experience is better. Even The application server does not support the service requested by the UE or has no service resources, and can continue to send the service request to the remote server through the core network without affecting the use of the user service. Then, from the perspective of the entire system, usually each access network device can access multiple UEs, and each UE usually has multiple service requirements.
  • the above method can also save backhaul resources.
  • the application server supports Cache acceleration of the Web class.
  • weibo, etc. many users have download or access requirements.
  • directly providing such services by the application server will greatly save Backhaul resources and avoid Because the lack of resources causes some users to be inaccessible, and the download and access delays are reduced, the user experience is greatly improved.
  • the access network device receives the M2M handshake request of the UE, and the requested destination UE also accesses the access network device.
  • the service request needs to pass through the core network and is fed back to the destination UE by the access network device.
  • the service request does not need to go through the core network, which reduces the service delay and saves Backhaul resources.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile Communications
  • FIG. 12 is a schematic structural diagram of an LTE communication system according to an embodiment of the present invention.
  • the access network side is provided with an eNB 121 and an application server 122.
  • the application server 122 is configured to run a third-party application service, and the eNB 121 needs to bypass the received service packet to the application server 122 for processing.
  • the service packet of the bypass may be a service packet sent from the air interface (UU) (that is, a service packet sent by the UE), or may be a service packet carried in the GTP-U from the S1-U interface.
  • the service gateway (S-GW) is set on the core network side. 123.
  • a Packet Data Network (PDN) gateway (P-GW) 124 and a Mobility Management Entity (MME) 125 is used for detecting, policy-implementing, and flow-based charging of service data flows between different networks, and is a user plane anchor point between the 3GPP access network and the non-3GPP access network, and is a core network packet switching domain and Interface for external PDN connections.
  • the Policy and Charging Enforcement Function (PCEF) entity is connected to the Policy and Charging Rules Function (PCRF) entity 126 through the Gx interface.
  • PCEF Policy and Charging Enforcement Function
  • PCRF Policy and Charging Rules Function
  • the S-GW 123 is used to establish a user plane tunnel between the eNB 121 and the P-GW.
  • the responsibilities of the MME 125 include: terminating non-access stratum signaling (eg, mobility management, session management, etc.), selection of a gateway, authentication of a UE, and the like.
  • the application server can be deployed on the HNB/HeNB gateway (GW).
  • GW HNB/HeNB gateway
  • the application server can be deployed in or near the RNC/BSC.
  • the HNB/HeNB GW or the RNC/BSC needs to bypass the received service packets to the application server for processing.
  • the bypass packets are different according to the standard/interface mode.
  • the UMTS is the air interface direction packet and the Iu-PS interface.
  • Directional packets, GSM is the air interface direction message and the A/Iu-PS port direction message.
  • FIG. 13 is a schematic diagram of the user plane data flow of the communication system shown in FIG.
  • the solid line 1 indicates the user plane data flow that the application server can terminate. That is, if it can be terminated, the third-party application can directly generate the downlink data.
  • the established user GTP-IL dotted line 2 indicates the user plane data that the application server cannot terminate. flow.
  • the user plane data stream shown by the solid line 1 may be preferentially selected according to the third party application supported by the application server, and the user plane data stream indicated by the dotted line 2 is reduced compared with the conventional one. Service delay improves service QoS and thus improves user experience.
  • the user plane channel is established in both the uplink and the downlink direction, and the service packets in the air interface direction and the service packets in the S1 direction are respectively carried.
  • Figure 14 shows the eNB separately, but in reality the two eNBs in the figure are physically one entity.
  • the direction of the air port and the direction of S1 The channels can be the same or different, and the user plane channel is different from the S1 channel, and the eNB needs to perform the conversion.
  • the application and wireless network interface protocol are the same as described above, and a list of control information in its control plane protocol is given here (such as Table 1 and Table 2, where the process in Table 1 is a process requiring a response; the process of Table 2 is not required The process of answering ;).
  • UMTS and GSM can multiplex the message types in the table, but the names and meanings need to be modified.
  • the eNB related words must be modified to specific network element names (for example, RNC in UMTS). Change is just the difference between specific cells.
  • a control plane link is established between the eNB and the application server. Specifically, the eNB initiates the establishment process of the SCTP link. After the SCTP link is successfully established, the Open Application Interface (Open API Interface) is established. After the open API interface is successfully established, the establishment of the control plane link is completed.
  • Open API Interface Open API Interface
  • a user plane channel is established between the eNB and the application server.
  • the dedicated bearer of the UE is established, if the eNB receives the service bearer setup request sent by the MME, the eNB triggers the service bearer setup process to the application server, and completes the process of establishing the user plane channel.
  • Two user plane channels may be established for the air interface direction and the S1 direction, or only one user plane channel may be established. If only one user plane channel is set up, you need to identify the channel or service packet as the air interface direction or the S1 direction. Regardless of whether the process is successful, an S1 tunnel (ie, a tunnel between the eNB and the core network) is established.
  • the eNB determines whether it needs to update the bearer information of the application server, and if necessary, initiates bearer update, otherwise it does not initiate. This process is not reflected in Figure 15;
  • the application server needs to be notified to release the service bearer. Then, the service bearer release response is sent to the MME, and the MME is notified of the release of the service bearer.
  • the application server wants to subscribe to the status information of the eNB, the status information subscription process may be initiated. If the subscription is successful, the eNB needs to report the status information of the subscription in a periodic or event manner.
  • the embodiment of the present invention provides an application server that can support the operation of a third-party application on the access network side. Therefore, the UE can directly perform service interaction with the access network side, thereby greatly improving the response time requested by the user. The service delay is reduced, the service QoS is improved, and the user experience is better. Then, the feasibility of adding a nutrition server on the access network side includes, but is not limited to, a single-site network networking structure and a cloud (Cloud) network scenario. The specific description is as follows:
  • Single-site networking solution Add an application server independent of the access network device directly on the access network side.
  • the application server is used as a component of the access network device, for example, directly embedded in the BaseBand Unit (BBU) in the form of a baseband board; at this time, the application server unit should conform to the board design standard and be embedded in the BBU.
  • BBU BaseBand Unit
  • the link channel is provided through the backplane.
  • Cloud BB Cloud server
  • the cloud server (Cloud BB) machine is embedded in the application server as a standard unit of the Cloud BB to provide third-party application services.
  • the embodiments of the present invention in combination with specific third-party applications, can solve the problems of mobility and lawful monitoring, billing, and bandwidth saving. Examples are as follows:
  • the eNB and the application server can complete the establishment and maintenance of the user channel during the mobile process, and ensure the continuity of the service in cooperation with the third-party service.
  • An example is as follows:
  • the local Cache of the service is deployed on the application server, and the remote Cache and the business continuity control function entity of the service are deployed after the SGi of the core network, between the P-GW and the S-GW.
  • Deploying the service termination function entity; the content in the local Cache on the application server may or may not have a corresponding copy in the remote Cache, but the remote service continuity control function entity stores the indexes of all local Caches, that is, the remote Cache function. The entity can learn whether the local cache hits by calculation.
  • the application server When receiving the HTTP request, the application server forwards the HTTP signaling to the core network through the tunnel of the S1-U regardless of the local hit.
  • the remote service continuity control function entity forwards the request to the remote server, and the remote server receives the request. After the request is sent to the UE, the data is sent by the entity.
  • the service continuity control function entity When the service continuity control function entity is used, the entity performs the decision. If the Cache misses, the cache is generated, and a Cache pointer (Index) is generated. The content continues to be sent regardless of whether it is hit or not.
  • the UE forwards and defines the private path information through the TCP extension header to indicate whether the content is hit by the Cache on the application server.
  • the entity After the content reaches the service termination function entity through the P-GW, the entity checks the path information, and if the content is instructed by the application server, the content is discarded, otherwise the message is forwarded to the UE. If the content continues to be forwarded to the application server via the S-GW and the eNB, the content that was not hit by the local cache will be cached, and the Cache Index will be generated. If the cache hits, the original content is replaced (fault-tolerant processing).
  • the local application server forwards the HTTP request, it adds a private extension header to the GTP-U packet carrying the application packet, indicating the local application identifier. If the content is hit, it must be carried. With the Cache Index; this information can be converted by the private TCP extension header when the service is terminated by the service.
  • the packet passes the service continuity control function entity, it records the application server corresponding to the request and the TCP extension header such as the Cache Index. Information.
  • the request information of the UE will pass through the application server, and the local application identifier and the Cache Index will be carried through the extended header of the GTP-U.
  • the sexual control function entity knows that the application server has changed, and knows whether the content in the new application server is cached on the local application server, so the service can continue to transmit; from the area with the application server to the area without the application server or vice versa
  • the remote service continuity control function can sense the change and can know whether content forwarding needs to be performed, thereby ensuring service continuity.
  • the application server gateway is deployed on the core network to complete the cooperation with the charging gateway and the lawful intercepting gateway.
  • the billing is generated by the application server and reported to the application server gateway, which is summarized and reported to the charging gateway.
  • the application server copies the message, and then reports it to the application server gateway, and the application server gateway summarizes and reports the lawful interception gateway.
  • a computer program product provided by an embodiment of the present invention includes a computer readable medium, the readable medium comprising a set of program codes for performing any of the communication methods described in the above embodiments.
  • the units in the apparatus in the embodiment can be distributed in the apparatus of the embodiment according to the embodiment, or the corresponding changes can be located in one or more apparatuses different from the embodiment.
  • the units of the above embodiment may be combined into one unit, or may be further split into a plurality of subunits.

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Abstract

本发明实施例提供通信方法与系统,以及接入网设备与应用服务器,所述通信方法包括:接入网设备接收业务报文;所述接入网设备根据策略向应用服务器发送所接收的业务报文,所述应用服务器设置于接入网侧,独立于所述接入网设备或设置于所述接入网设备之内,且所述应用服务器支持至少一种业务运行。可见,其在接入网侧引入可以支持第三方应用运行的应用服务器,如此,UE可以直接与接入网侧进行业务交互,大大提高了用户请求的响应时间,降低了业务时延,提高了业务QoS,从而使用户体验更佳。

Description

通信方法与系统, 以及接入网设备与应用服务器 技术领域
本发明实施例涉及移动通信技术领域, 尤其涉及一种通信方法与系统, 以及接入网设备与应用服务器。 背景技术
在移动通信技术领域, 用户设备(User Equipment, UE )需要通过无线 网络与外部网络(例如, 因特网 (Internet ) )建立连接, 进而通过外部网络 或远端服务器, 享受第三方应用业务的服务。
如图 1所示, 无线网络主要包括接入网 110和核心网 ( Core Network, CN ) 120, 其中对无线资源的管理功能主要集中在接入网 110完成, 而与业 务和应用相关功能主要集中在核心网 120完成。 可见, 接入网 110是连接 UE130和核心网 120的桥梁。 UE130与外部网络的业务交互需基于 UE、接 入网与核心网之间的连接, 并最终通过核心网侧的网关 121 实现。 由于远 端服务器 140位于核心网的网关 121之后, 远离 UE130, 会引起业务时延 拉长且业务服务质量( Quality of Service, QoS )较低等问题, 从而影响用 户体验。 发明内容
本发明实施例提供通信方法与系统, 以及接入网设备与应用服务器, 以解决业务时延拉长、 业务 QoS较低等问题, 从而提高用户体验。
一方面, 本发明实施例提供一种通信方法, 包括: 接入网设备接收业 务报文; 所述接入网设备根据策略向应用服务器发送所接收的业务报文, 所述应用服务器设置于接入网侧, 独立于所述接入网设备或设置于所述接 入网设备之内, 且所述应用服务器支持至少一种业务运行。 另一方面, 本发明实施例提供一种通信方法, 包括: 应用服务器接收 接入网设备发送的业务报文, 所述应用服务器设置于接入网侧, 独立于所 述接入网设备或设置于所述接入网设备之内, 且所述应用服务器支持至少 一种业务运行; 所述应用服务器处理所述业务报文。
另一方方面, 本发明实施例提供一种接入网设备, 包括: 用于与用户 设备进行通信的第一接口单元; 用于与核心网进行通信的第二接口单元; 用于与应用服务器进行通信的第三接口单元, 其中所述应用服务器设置于 接入网侧, 且独立于所述接入网设备或设置于所述接入网设备之内, 所述 应用服务器支持至少一种业务运行; 处理器, 分别与所述第一接口单元、 第二接口单元和第三接口单元连接, 且所述处理器用于通过所述第一接口 单元或第二接口单元接收业务报文, 且通过第三接口单元, 根据策略向所 述应用服务器发送所接收的业务报文。
另一方面, 本发明实施例提供一种应用服务器, 支持至少一种业务运 行, 所述应用服务器位于接入网侧, 且独立于接入网设备或设置于所述接 入网设备之内, 所述应用服务器包括: 用于与接入网设备进行通信的接口 单元; 存储单元, 用于存储所述应用服务器所支持业务的业务数据; 处理 单元, 分别与所述接口单元和所述存储单元连接, 所述处理单元用于通过 所述接口单元接收所述接入网设备发送的业务报文, 并处理所述业务报文。
另一方面, 本发明实施例提供一种通信系统, 其接入网侧设置有如上 所述的接入网设备与如上所述的应用服务器。
另一方面, 本发明实施例提供一种计算机可读存储介质, 包括: 用于 执行如权利要求 1~7任一项所述的方法的程序。
另一方面, 本发明实施例提供一种计算机可读存储介质, 包括: 用于 执行如权利要求 8~16任一项所述的方法的程序。
可见, 本发明实施例在接入网侧引入可以支持第三方应用运行的应用 服务器, 如此, UE可以直接与接入网侧进行业务交互, 大大提高了用户请 求的响应时间, 降低了业务时延, 提高了业务 QoS, 从而使用户体验更佳。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中 所需要使用的附图作一筒单地介绍, 显而易见地, 下面描述中的附图是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动 的前提下, 还可以根据这些附图获得其它的附图。
图 1为现有的一种通信系统的结构示意图;
图 2为本发明实施例所提供的一种通信系统的结构示意图;
图 3为本发明实施例所提供的一种接入网设备的结构示意图; 图 4为本发明实施例所提供的一种应用服务器的结构示意图; 图 5 为本发明实施例所提供的一种应用服务器处理业务报文的流程示 意图;
图 6为本发明实施例所提供的另一种应用服务器处理业务报文的流程 示意图;
图 7 为本发明实施例所提供一种应用与无线网络接口协议的结构示意 图;
图 8为本发明实施例所提供的一种应用服务器的软件架构图; 图 9为本发明实施例所提供的一种通信方法的流程图;
图 10为本发明实施例所提供的另一种通信方法的流程图;
图 11为本发明实施例所提供的又一种通信方法的示意图;
图 12为本发明实施例所提供的一种 LTE通信系统的结构示意图; 图 13为本发明实施例所提供的一种 LTE通信系统的用户面数据流示意 图;
图 14为本发明实施例所提供的一种 LTE通信系统的用户面接口示意 图; 图 15为本发明实施例所提供的一种 LTE通信系统中控制面数据流示意 图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动的前 提下所获得的所有其它实施例, 都属于本发明保护的范围。
本发明实施例充分考虑到现有第三方应用业务交互过程中所存在的问 题, 在接入网侧引入可以支持第三方应用运行的逻辑网元, 如此, UE可以 直接与接入网侧进行业务交互, 大大提高了用户请求的响应时间, 降低了 业务时延, 提高了业务 QoS , 从而使用户体验更佳。 下面结合附图进行详 细的描述。
请参考图 2, 其为本发明实施例所提供的一种通信系统的结构示意图。 参照图 1可以看出, 本发明实施例在接入网 210侧引入的逻辑网元为应用 服务器 212, 该应用服务器 212支持至少一种业务的运行。 且物理上, 应用 服务器 212可以是位于接入网设备 211之外的独立设备, 也可以集成在接 入网设备 211之中, 本实施例不做任何限制。
接入网设备 211 除完成原有的功能外, 需要增加报文旁路功能, 将来 自 UE230或核心网 220的业务报文旁路到应用服务器 212上进行处理。 接 入网设备 211的原有功能包括无线资源的管理、 空口数据的转发、 UE状态 维护等, 其为本领域技术人员所熟知, 在此不再赘述。
需要说明的是, 接入网设备 211是一种将 UE接入到无线网络的设备, 包括但不限于: 基站 (Node B )、 演进型基站(evolved Node B , eNB )、 家 庭基站( Home Node B , HNB ) I ( Home eNode B , HeNB )、 无线网络控制 器 ( radio network controller, RNC )、 基站控制器 ( Base Station Controller, BSC ), 基站 发台 (Base Transceiver Station, BTS )。
此外, 本实施例所述的第三方应用包括但不限于网页(Web )类的緩存 ( Cache )加速、 视频转码、 机对机 ( Machine- to-Machine, M2M )握手信 令终结, 内容存储发布等, 其可以由第三方提供, 本实施例不做任何约束。 另外, 应用服务器 212可以是开放式的应用服务器, 其为第三方应用服务 商提供一个开放的平台, 支持各种第三方应用的扩展, 如此, 有利于用户 体验的进一步提高。
下面结合附图对接入网设备 211和应用服务器 212进行更加详细的描 述。
请参考图 3 , 其为本发明实施例所提供的一种接入网设备的结构示意 图。 如图所示, 该接入网设备 211包括: 第一接口单元 310、 第二接口单元 320、第三接口单元 330和分别与所述第一接口单元 310、第二接口单元 320 和第三接口单元 330 连接的处理器 340。 其中第一接口单元 310 用于与 UE230进行通信; 第二接口单元 320用于与核心网 220进行通信; 第三接 口单元 330用于与应用服务器 212进行通信; 处理器 340用于通过所述第 一接口单元 310或第二接口单元 320接收业务报文, 且通过第三接口单元 330, 根据策略向所述应用服务器 212发送所接收的业务报文。 其中, 所述 应用服务器 212同以上描述, 支持至少一种业务运行, 且设置于接入网侧, 可以独立于所述接入网设备 211 , 也可以设置于所述接入网设备 211之内。
接入网设备 211向应用服务器 212发送业务报文的策略包括: 将接入 网设备 211所接收的业务报文全部发送给应用服务器 212;或利用识别信息 标识业务报文是否可以发送给应用服务器 212,且将可以发送给应用服务器 212的业务报文发送给应用服务器 212, 将不可以发送给应用服务器 212的 业务报文发送给核心网 220。 其中, 识别信息可以是现有业务报文所携带的 一些标识信息, 包括但不限于: 用户文件标识( Subscriber Profile ID , SPID ) 信息、 业务质量等级标识(QoS class identifier, QCI )信息、 筒单报文解析 ( Stateful Packet Inspection , SPI )信息、 或深度报文解析 (Deep Packet Inspection, DPI )。 其中对于识别信息与业务报文是否可以发送给应用服务 器 212的对应关系可以由运营商定义, 本实施例不 #文任何限制。
以根据 SPID将部分业务报文发送到应用服务器 212上进行处理为例: 其中 SPID为运营商定义的用户标识, 当前取值范围为 1~256, 具体含义可 以由运营商进行定义(当前只定义了一些数值用于驻留优先级以及异频 /异 系统切换优先级)。 运营商可以预定义一些 SPID表征可以将此用户的哪些 承载或者哪些类业务报文发送到应用服务器 212上进行处理, 从而接入网 设备 211在接收到业务报文后,便可以根据用户的 SPID判断是否将所接收 的业务报文发送给应用服务器 212。
以根据 QCI将部分业务报文发送到应用服务器 212上进行处理为例: 其中 QCI包括 9个等级, 运营商可以预先定义这 9个等级中哪个或哪几个 等级的业务需要发送到应用服务器 212上进行处理, 从而接入网设备 211 在接收到业务报文后, 便可以根据业务报文的 QCI判断是否将所接收的业 务报文发送给应用服务器 212。
再以根据 SPI或 DPI将部分业务报文发送到应用服务器 212上进行处 理为例: 运营商可以预定义一些业务报文转发到应用服务器 212的规则, 比如根据4艮文的 5元组(源 IP、 目的 IP、 源端口、 目的端口、 协议类型 ) 进行转发, 从而接入网设备 211 在接收到业务报文后, 便可以根据转发规 格对业务报文进行判断是否将所接收的业务报文发送给应用服务器 212。
请参考图 4, 其为本发明实施例所提供的一种应用服务器的结构示意 图。 如图所示, 该应用服务器 212 同以上所述, 支持至少一种业务运行, 且位于接入网侧, 可以独立于接入网设备, 也可以设置于所述接入网设备 之内。 所述应用服务器 212包括接口单元 410、存储单元 420和分别与接口 单元 410和存储单元 420连接的处理单元 430。其中接口单元 410用于与接 入网设备 211进行通信; 存储单元 420用于存储应用服务器 212所支持业 务的业务数据; 处理单元 430用于通过接口单元 410接收接入网设备 211 发送的业务报文, 并处理所述业务报文。
需要说明的是, 处理单元 430可以是处理器, 存储单元 420可以是存 储器。 如果应用服务器 212集成于所述接入网设备 211 , 则其处理单元 430 的功能可以在接入网设备 211的处理器 340实现, 即与接入网设备 211共 有处理器。
处理单元 430对应业务报文的处理过程随其所接收的业务报文的变化 而变化。 包括但不限于以下情况:
在预设接入网设备 211向应用服务器 212发送业务报文的策略时, 即 根据应用服务器 212当前可以支持的业务类型而制定,仅将应用服务器 212 所支持业务的业务报文发送给应用服务器 212。如此应用服务器 212无需对 所接收的业务报文做出其是否支持的判断。 那么, 处理单元 430处理所述 业务报文的过程如图 5所示, 包括:
步骤 S510: 解析业务报文, 此过程为剥离其它协议层信息, 获得应用 层数据的过程。
步骤 S520: 根据解析后的业务报文, 运行所述业务报文对应的业务; 步骤 S530: 将运行结果反馈给接入网设备。
如果在预设接入网设备 211向应用服务器 212发送业务报文的策略时, 不以应用服务器当前所支持的业务类型为依据, 那么处理单元 430处理所 述业务报文的过程如图 6所示, 包括:
S610: 解析业务>¾文, 同步骤 S510, 在此不再详述;
S620: 根据解析后的业务报文, 判断所述处理单元是否支持所述业务 报文对应的业务的运行。 若支持, 执行步骤 S630; 若不支持, 执行步骤步 骤 S640、 S650或 S660。
即若解析结果显示所述处理单元支持所述业务报文对应的业务的运 行, 根据解析后的业务报文, 运行所述业务报文对应的业务, 将运行结果 反馈给所述接入网设备 (步骤 S630 ); 若解析结果显示所述处理单元不支持 所述业务报文对应的业务的运行, 将所述业务报文回传给所述接入网设备 (步骤 S640 ), 以使得接入网设备按照传统的通道将业务报文发送出去; 或 向核心网发送所述业务报文(步骤 S650 ),此时需要应用服务器到核心网有 直接的通道; 或向所述接入网设备发送指示信令(步骤 S660 ), 所述指示信 令用于指示所述接入网设备向核心网发送所述业务报文。 由于接入网设备 之前已经接收到该业务报文, 只要对该业务报文进行緩存, 便可以根据该 指示信息按照传统的通道将业务报文发送出去。 在应用服务器无法提供服 务时, 提供以上步骤 S640、 S650或 S660, 可以保证按照传统的方式为 UE 提供服务, 保证服务不间断。
另外, 如果解析后的业务报文包括所述处理单元支持的业务的更新数 据, 将所述更新数据存储至存储单元。
考虑到业务报文的在接入网设备 211与应用服务器 212之间的传递, 需要在接入网设备 211与应用服务器 212之间建立用户面通道。 一种方式 是: 预先将用户面通道设置好, 此时只需要定义用户面协议, 以通过该用 户面协议在预先设置好的用户面通道上传递业务报文。 另一种方式是, 配 置好接入网设备 211第三接口单元 330的协议以及与之交互的应用服务器 212的接口单元 410的协议,从而通过配置好的协议, 在需要时在接入网设 备 211与应用 良务器 212之间建立用户面通道, 以通过用户面通道传送业 务报文。
第三接口单元 330的协议和接口单元 410的协议均为应用与无线网络 接口协议, 以便通过该应用与无线网络接口协议, 在接入网设备 211 与应 用服务器 212之间建立用户面通道。
请参考图 7, 其为应用与无线网络接口协议的结构示意图。 如图所示, 应用与无线网络接口协议包括控制面协议 710和用户面协议 720 ,所述用户 面协议 720用于用户面通道上的信息传输, 控制面协议 710用于用户面通 道的建立, 且用户面通道的建立包括: 通过控制面协议, 在接入网设备与 应用服务器之间建立控制面链路; 通过控制面链路承载的控制信息, 在接 入网设备与应用服务器之间建立用户面通道。
控制面协议 710 包括业务网络层协议和传输网络层协议, 其业务网络 层协议包括控制信息; 其传输网络层协议包括物理层协议、 数据链路层协 议、 网络层协议和传输层协议。 所述用户面协议包括业务网络层协议和传 输网络层协议,其中业务网络层协议同现有的用于 UE与远端服务器之间业 务报文传递的业务网络层协议, 接入网对这部分协议不做处理, 只进行透 传, 其为本领域技术人员所熟知, 本实施例在此不再赘述; 传输网络层协 议用于实现业务报文的传递, 其传输网络层协议同样包括物理层协议、 数 据链路层协议、 网络层协议和传输层协议。
其中, 控制面协议的传输网络层协议中, 网络层协议可以是互联网协 议( Internet Protocol, IP );传输层协议可以是流控制传输协议( Stream Control Transmission Protocol, SCTP )、传输控制十办议 ( Transmission Control Protocol, TCP )或用户数据报协议(User Datagram Protocol, UDP )。 用户面协议的 传输网络层协议中, 网络层协议可以是 IP; 传输层协议可以包括 UDP和 GPRS通道协议用户面部分( GPRS Tunneling Protocol-User plane, GTP-U ), 其中, GTP-U可以替换成 UDP通道协议、 IP通道协议、 或数据链路层通道 协议。 此处仅为举例, 并非用以限制本发明。
以上控制信息包括但不限于复位消息、 开放 API接口设置请求消息、 基站配置更新消息等, 其以长期演进(Long Term Evolution, LTE)接入技 术为例, 关于其它接入技术, 例如通用移动通讯系统 (Universal Mobile Telecommunications System, UMTS )等与之类似, 在此不再赘述。
较佳的, 控制信息包括状态信息订阅请求消息, 所述状态信息订阅请 求消息用于指示接入网设备向应用服务器发送无线网络的状态信息。 如此, 第三方应用便可以根据状态信息, 灵活调整其对业务报文的处理。 例如, 若状态信息显示空口拥塞, 而便可以将高清的视频资源调整为普通视频资 源发送给 UE。 再如, 当大部分业务报文所涉及的业务为点对点 (P2P )通 信, 只有少数涉及视频业务, 则可以调用更多无线资源保证视频质量。
较佳的, 控制信息包括策略修改请求消息, 所述策略修改请求消息用 于指示接入网设备向应用服务器发送业务报文的策略。 如此, 运营商便可 以根据第三方应用的需求灵活调整接入网设备向应用服务器发送业务报文 的策略。
可见,接入网设备 211的处理器 340还用于通过第三接口单元 330, 在 接入网设备 211与应用服务器 212之间建立用户面通道, 应用服务器 212 的处理单元 430还用于通过接口单元 410在接入网设备 211与应用服务器 212之间建立用户面通道。
需要说明的是, 由于业务报文可以来自 UE, 也可以来自核心网侧, 因 此可以在上、 下行方向分别建立一个用户面通道。 当然也可以建立一个独 立的用户面通道,此时为了区分业务报文是 UE侧的数据,还是核心网侧的 数据, 需要在业务报文中增加方向标识字段, 以标识业务报文的源方向。
另外, 考虑到应用服务器支持的业务通常不止一个, 在只考虑一个方 向 (上行方向或下行方向)上的用户通道时, 如果所有业务共享一个用户 面通道, 则需要在业务 文增加标识, 用以标识转发目的地, 即标识该业 务报文需要提供给哪个业务运行; 如果不增加字段, 则需要应用服务器对 业务报文进行识别分发。
以上为应用服务器的硬件结构介绍, 下面结合附图介绍其软件结构。 现整个应用服务器的功能。请参考图 8, 其为本发明实施例所提供的应用服 务器的软件架构。如图所示,处理单元 430为中央处理器( Central Processing Unit, CPU ), 其上通过板级支持包(board support package, BSP )运行操 作系统( Operating System, OS )。 从而在 OS所提供的平台上运行控制面处 理程序、用户面处理程序、第三方应用程序,操作管理(Operation Manager, OM )程序。 其中:
控制面处理程序: 用于处理应用服务器与接入网设备之间的控制面消 息, 主要存在三种基本类型的控制过程: 基本管理过程, 业务承载管理过 程, 开放信息获取过程。 基本管理过程用于应用服务器与接入网设备间的 控制面链路建立和维护; 业务承载管理过程用于应用服务器与接入网设备 间的用户面通道的建立和维护; 开放信息获取过程用于应用服务器订阅无 线网络的状态信息 (包括接入网设备侧空口或接入网设备自身的状态信 息), 以及这些状态信息从接入网设备的上报 。
用户面处理程序: 提供应用服务器到接入网设备间的用户面通道处理, 用于业务报文在接入网设备和应用服务器间的交互。
第三方应用程序: 根据具体的应用对用户的应用层数据进行终结或转 发, 或提供具体的业务。
OM程序: 用于协调和管理用户面处理、 控制面处理以及第三方应用, 至少包括 log/test/版本管理功能。
从以上描述可以看出, 接入网设备除完成原有的功能外, 需要增加的 功能包括:
第一、 向应用服务器发送业务报文处理: 如果到每个第三方应用建立 一个独立的用户面通道, 则只将报文转发到对应的用户面通道上(如果上 下行分别建立一个用户面通道, 则每个通道表征一个方向, 否则需要使用 方向标识字段, 标识是 UE方向的数据还是核心网方向的数据)。 如果第三 方应用共享一个用户面通道, 则需要给报文增加一个标识(用于标识发送 的目的地), 然后进行发送; 如果不增加标识, 则需要在接收端对报文进行 识别分发(如果上下行分别建一个通道, 则每个通道表征一个方向, 否则 需要使用方向标识字段); 第二、 从应用服务器接收报文后的转发: 如果每个第三方应用建立一 个独立的用户面通道, 则将报文根据方向发送到 UE或者核心网即可(如果 上下行分别建一个通道, 则每个通道表征一个方向, 否则需要使用方向标 识字段)。 如果第三方应用共享一个用户面通道, 则需要根据策略进行报文 转发, 可选的策略包括但不限于: 根据 DPI进行转发; 根据标识(用于标 识发送目的地——具体的承载)进行识别转发(如果 UE方向和核心网方向 分别建一个通道, 则每个通道表征一个方向, 否则还需要使用方向标识字 段。
第三、 用户面通道的建立。
应用服务器的功能包括:
第一、 解析接入网设备发送的业务报文。
第二、 用户面通道的建立。
第三、 第三方应用的执行。
第四、 从接入网设备接收报文处理以及业务报文转发到具体的第三方 应用: 如果每个第三方应用建立一个独立的用户面通道, 则只将对应通道 上的报文转发到对应的第三方应用上(如果上下行分别建一个通道, 则每 个通道表征一个方向, 否则需要使用方向标识字段); 如果第三方应用共享 一个用户面通道, 则需要根据一定策略进行报文转发, 可选的策略包括但 不限于: 根据 DPI进行转发; 根据转发标识进行识别转发(如果上下行分 别建一个通道,则每个通道表征一个方向,否则还需要使用方向标识字段)。
第五、 向接入网设备发送报文处理, 即第三方应用的用户面报文到用 户面通道的转发: 如果每个第三方应用建立一个独立的用户面通道, 则只 将报文转发到对应的通道上即可(如果上下行分别建一个通道, 则每个通 道表征一个方向, 否则需要使用方向标识字段); 如果第三方应用共享一个 用户面通道, 则需要给报文增加一个标识(用于标识转发目的地), 然后进 行转发(如果不增加标识, 则需要在接收端对报文进行识别分发, 如果上 下行分别建一个通道则每个通道表征一个方向, 否则需要使用方向标识字 段)。
相应于以上接入网设备, 本发明实施例还提供一种通信方法, 如图 9 所示, 包括如下步骤:
S910: 接入网设备接收业务报文;
S920: 接入网设备根据策略向应用服务器发送所接收的业务报文。 所述应用服务器同以上论述, 设置于接入网侧, 独立于接入网设备或 设置于接入网设备之内, 且支持至少一种业务运行。
可见, UE侧的业务报文可以经由接入网设备转发至应用服务器, 而由 应用服务器进行处理。如此,在接入网侧便可以完成对 UE侧业务报文的响 应, 从而大大提高了用户请求的响应时间, 降低了业务时延, 提高了业务 QoS, 使用户体验更佳。
同以上实施例, 在步骤 S910中, 接入网设备接收的业务报文可以来自 UE侧, 也可以来自核心网侧。
同以上实施例, 在步骤 S920中, 接入网设备向应用服务器发送业务报 文的策略包括但不限于: 将所述接入网设备所接收的业务报文全部发送给 所述应用服务器; 或利用识别信息标识所述业务报文是否可以发送给所述 应用服务器, 且将可以发送给所述应用服务器的业务报文发送给所述应用 服务器, 将不可以发送给所述应用服务器的业务报文发送给核心网。 其中 关于识别信息的设置同以上实施例, 在此不再赘述。
相应于以上应用服务器, 本发明实施例还提供另一种通信方法, 如图 10所示, 包括如下步骤:
S101 : 应用服务器接收接入网设备发送的业务报文, 其中, 应用服务 器设置于接入网侧, 独立于接入网设备或设置于接入网设备之内, 且该应 用服务器支持至少一种业务运行;
S102: 应用服务器处理所述业务报文。 可见, 将支持业务运行的应用服务器设置于接入网侧, 且从接入网设 备接收并处理业务报文。如此,在接入网侧便可以完成对 UE侧业务报文的 响应, 从而大大提高了用户请求的响应时间, 降低了业务时延, 提高了业 务 QoS, 使用户体验更佳。
以上步骤 S102对应业务报文的处理过程随应用服务器所接收的业务报 文的变化而变化。 包括但不限于图 5和图 6所示过程。
另外, 如果解析后的业务报文包括所述处理单元支持的业务的更新数 据, 将所述更新数据存储至存储单元。
在接入网设备向应用服务器发送业务报文以及应用服务器从接入网设 备接收业务报文之前, 需要在接入网设备和应用服务器之间建立用户面通 道。 关于用户面通道的建立方式同以上描述, 在此不再赘述。
相应于以上通信系统, 本发明实施例还提供一种通信方法, 如图 11所 示, 包括:
S111: 接入网设备接收 UE或核心网发送的业务报文。
S 112: 接入网设备根据策略向应用服务器发送所接收的业务报文。 在步骤 S 112之前, 需要在接入网设备与应用服务器之间建立用户面通 道。
如上所述, 用户面通道可以是预先设置好的, 接入网设备和应用服务 器上电后, 用户面通道即可以^载用户面信息。 也可以通过接入网设备和 应用服务器之间的接口协议, 在接入网设备和应用服务器上电后或者接入 网设备接收到需要转发给应用服务器的业务报文后, 再建立用户面通道。
另外, 建立用户面通道的数量可以是一个, 也可以是多个。 例如考虑 到上、 下行业务数据的传输, 可以分别在上下行上各建立一个用户面通道; 也可以只建立一个用户面通道, 并在业务^艮文中增加方向标识字段。 再如, 考虑到应用服务器上运行第三方应用的数据, 可以为每个第三方应用建立 一个用户面通道; 也只建立一个由所有第三方应用共用的用户面通道, 此 时需要接收端对接收到业务报文进行识别分发, 或在业务报文中增加标识 目的地的标识字段。
S113: 应用服务器处理业务报文。
如果业务报文来自 UE, 通常其包括 UE的业务请求, 如果应用服务器 具有 UE所请求的业务资源, 则应用服务器将业务资源发送给接入网设备 ( S114 )。 如果应用服务器没有 UE所请求的业务资源, 则应用服务器将业 务报文回传给接入网设备, 以使得接入网设备按照传统的通道将业务报文 发送出去(S115 ); 或将业务报文直接发送给核心网, 此时需要应用服务器 到核心网有直接的通道(S116 ); 或向接入网设备发送指示信令(S117 ), 所述指示信令用于指示接入网设备向核心网发送业务报文, 由于在步骤 S111中,接入网设备已经接收到该业务报文, 只要对该业务报文进行緩存, 便可以根据该指示信息按照传统的通道将业务报文发送出去; 以在应用服 务器无法提供服务时, 按照传统的方式为 UE提供服务。
当接入网设备接收到 UE所请求的业务资源时,向 UE发送所述业务资 源 (S118 )。 当接入网设备接收到回传的业务报文或指示信令时, 将业务报 文继续发送到核心网 (S119 )。
需要说明的是, 如果应用服务器支持 UE所请求的业务, 但是没有 UE 所请求的业务资源, 由于业务请求可以继续通过核心网发往外网。 进而通 过外网获得所请求的业务资源。 且当所请求的业务资源经过核心网发送到 接入网设备时, 接入网设备将其转发至应用服务器, 则应用服务器在以上 步骤 S113中, 存储该业务资源, 以更新其内的业务资源。 当然, 这个更新 也可以由外网定期或实时经核心网、 接入网设备发送给应用服务器。
可见, 当接入网设备接收到 UE的业务请求时,其将业务请求发送给应 用服务器; 应用服务器如果具有 UE所请求的业务资源, 则可以直接为 UE 提供服务, 极大的缩短了业务交互路径, 且业务交互所涉及的网元也减少 了, 因此, 业务时延得以降低, 业务 QoS得以提高, 用户体验更佳。 即使 应用服务器不支持 UE所请求的业务或者没有业务资源,也可以继续将业务 请求通过核心网发送给远端服务器, 从而不影响用户业务的使用。 那么, 从整个系统来看, 通常每个接入网设备可以接入多个 UE, 且每个 UE通常 会有多种业务需求, 因此, 必然会有应用服务器可以提供支持的业务, 从 而从整体上减少业务时延,提高业务 QoS。尤其是对于多个 UE相同的业务 请求, 以上方法还可以节约回程(Backhaul )资源。 例如, 应用服务器支持 Web类的 Cache加速, 对于热点视频、 微博等, 许多用户都有下载或访问 需求, 此时, 由应用服务器直接提供此类服务, 将极大节省 Backhaul资源, 且避免了因为资源不足导致部分用户无法访问, 且降低了下载与访问时延, 极大的提高了用户体验。
再如, 在以上步骤 S111中, 接入网设备接收到的是 UE的 M2M握手 请求, 且其所请求的目的 UE也接入该接入网设备。 在传统流程中, 该业务 请求需经过核心网, 由接入网设备反馈给目的 UE。 而利用本实施例所提供 的方法, 只要应用服务器支持 M2M握手业务, 则该业务请求无需再经过核 心网, 降低了业务时延, 且节省了 Backhaul资源。
下面以长期演进 ( Long Term Evolution , LTE )通信系统为例, 说明以 上实施例所提供的通信方法、 接入网设备、 应用服务器与通信系统的特征 与优点, 且其它通信系统 (例如通用移动通讯系统 ( Universal Mobile Telecommunications System, UMTS )、全球移动通信系统( Global System for Mobile Communications, GSM ) )与之类似, 以下实施例将不再赞述。
请参考图 12, 其为本发明实施例所提供的一种 LTE通信系统的结构示 意图。 如图所示, 接入网侧设置有 eNB121和应用服务器 122, 其中应用服 务器 122用于运行第三方应用服务, eNB121需要将接收到的业务报文旁路 到应用服务器 122上进行处理。 旁路的业务报文可以是从空口 (UU )上来 的业务报文(即 UE发送的业务报文), 也可以是从 S1-U接口上来的承载 在 GTP-U中的业务报文。核心网侧设置有业务网关( serving gateway, S-GW ) 123、 分组数据网网关( Packet Data Network ( PDN ) gateway, P-GW ) 124 和移动性管理实体( Mobility Management Entity, MME ) 125。其中 P-GW124 用于不同网络间业务数据流的检测、 策略执行和基于流的计费, 是 3GPP 接入网络和非 3GPP接入网络之间的用户面锚点,是核心网分组交换域与外 部 PDN连接的接口。 同时可做为策略和计费执行功能( Policy and Charging Enforcement Function, PCEF ) 实体通过 Gx接口与策略和计费规则功能 ( Policy and Charging Rules Function, PCRF ) 实体 126相连。 S-GW123用 于建立 eNB121与 P-GW之间的用户面隧道。 MME125的职责包括: 终止 非接入层信令(例如, 移动性管理、 会话管理等)、 网关的选择、 UE 的认 证等。
需要说明的是, 对 HNB/HeNB场景由于站点覆盖太小, 为节约成本, 应用服务器可以部署在 HNB/HeNB 网关(GW ); 对 UMTS、 GSM, 应用 服务器可以部署在 RNC/BSC中或附近; HNB/HeNB GW或 RNC/BSC需要 将接收的业务报文旁路到应用服务器上进行处理, 旁路报文根据制式 /接口 模式的不同而不同, 对 UMTS为空口方向报文和 Iu-PS口方向报文, GSM 为空口方向报文和 A/Iu-PS口方向报文。 请参考图 13, 其为图 12所示通信 系统的用户面数据流示意图。 其中, 实线①表示应用服务器可以终结的用 户面数据流, 即如果能终结, 则第三方应用可以直接生成下行 ^艮文利用已 经建立的 GTP-IL 虚线②表示应用服务器无法终结的用户面数据流。 在本 发明实施例中, 可以根据应用服务器所支持的第三方应用, 优先选择实线 ①所示的用户面数据流, 相对于传统仅存在虚线②所示的用户面数据流的 情况, 降低了业务时延, 提高了业务 QoS, 从而使用户体验更佳。
请继续参考图 14, 为了方便 eNB121与应用服务器 122之间的报文传 递, 本实施例在上、 下行方向上均建立用户面通道, 分别承载空口方向的 业务报文和 S1方向的业务报文。且为了清楚起见, 图 14将 eNB分开显示, 但实际上图中两个 eNB在物理上是一个实体。另外, 空口方向和 S1方向的 通道可以相同, 也可以不同, 且用户面通道与 S1 通道不相同, 需要 eNB 进行转换。
应用与无线网络接口协议同以上描述, 在此给出其控制面协议中的控 制信息的列表(如表 1和表 2, 其中表 1中的过程是需要应答的过程; 表 2 的过程是无需应答的过程;)。
Figure imgf000020_0001
表 2
Figure imgf000021_0001
需要说明的是, UMTS和 GSM可以复用表中的消息类型, 但名称和含 义需要修改, 比如 eNB相关字样都要修改为具体的网元名称(例如, UMTS 中的 RNC ), 其他含义上没有变化, 只是具体信元的不同。
下面根据以上控制信息并结合图 15,描述建立用户面通道的详细过程。 如图 15所示:
当 eNB和应用服务器上电后,在 eNB与应用服务器之间建立控制面链 路。 具体, eNB发起 SCTP链路的建立过程, 当 SCTP链路建立成功后, 发 起开放应用程序编程接口( Open API Interface )建立过程, 当开放 API接口 建立成功后, 控制面链路的建立完成。
在 eNB与应用服务器之间建立用户面通道。 当有 UE的专用承载建立 时, 如果 eNB收到 MME发来的业务承载建立请求, eNB触发至应用服务 器的业务承载建立过程, 完成用户面通道的建立过程。 其中, 可以针对空 口方向和 S1方向建立两条用户面通道, 也可以只建立一条用户面通道。 如 果只建立一条用户面通道, 需要标识通道或业务报文是空口方向还是 S1方 向。 无论此过程是否成功, S1隧道(即 eNB与核心网之间的隧道)都会被 建立。 但是如果用户面通道建立不成功, 则 eNB将无法将业务 ^¾文转发到 应用服务器。 另外, 业务承载建立过程是否成功, 都需要向 MME发送业务 承载建立响应, 以通知用户面通道是否建立。 关于业务承载、 会话管理和 无线资源分配, 为本领域技术人员所熟知, 在此不再赘述。 如果 eNB收到 MME发来的承载更新请求, 则 eNB判断是否需要更新 应用服务器的承载信息, 如果需要, 则发起承载更新, 否则不发起。 此过 程未在图 15中体现;
如果 eNB 自身或收到 MME发起的消息触发承载释放, 则需要通知应 用服务器释放业务承载。 而后, 向 MME发送业务承载释放响应, 将业务承 载释放的情况通知 MME。
另外, 如果应用服务器希望订阅 eNB的状态信息, 可以发起状态信息 订阅过程; 如果订阅成功, 则 eNB需要以周期或事件方式上报订阅的状态 信息。
综上所述, 本发明实施例在接入网侧弓 I入可以支持第三方应用运行的 应用服务器, 如此, UE可以直接与接入网侧进行业务交互, 大大提高了用 户请求的响应时间, 降低了业务时延, 提高了业务 QoS, 从而使用户体验 更佳。 那么, 在接入网侧增加营养服务器的可行性组网方案包括但不限于 单站点的网络组网结构和云 (Cloud ) 网络场景下的组网结构。 具体描述如 下:
单站点组网方案: 在接入网侧直接增加独立于接入网设备的应用服务 器。 或应用服务器作为接入网设备的一个组成单元, 例如, 类似于基带板 的形式直接嵌入到基带单元(BaseBand Unit, BBU ) 中; 此时, 应用服务 器单元应符合单板设计标准, 嵌入在 BBU中, 通过背板提供链接通道。
基于 Cloud网络场景下的组网方案: 在云基站(Cloud BB )机拒中嵌 入应用服务器作为 Cloud BB的一个标准单元, 提供第三方应用业务。
目前, 在现有技术中, 为了缩短远端服务器至 UE的距离, 进而减少业 务时延, 提出了一种将网关下移的解决方案, 例如下移到 S-GW或接入网 侧等, 这种解决方案虽然可以解决业务时间较长业务 QoS较低等问题, 但 却在移动性、 合法监听、 计费和节省带宽等方面无法做好权衡。 尤其是对 移动性的处理上, 一旦 UE移动, 并从其它接入网设备接入时, 网关后的第 三方服务将无法感知到此变化, 从而无法保证业务的连续性。
而本发明实施例结合具体的第三方应用便可以解决移动性以及合法监 听、 计费和节省带宽等方面的问题。 举例如下:
移动性处理
本发明实施例所提供的架构下, eNB和应用服务器可以完成 UE在移 动过程中用户通道的建立和维护, 在第三方业务的配合下, 保证业务的连 续性。 举例说明如下:
比如对于 Web类业务, 应用服务器上部署此类业务的本地 Cache, 在 核心网的 SGi后之后部署此类业务的远端 Cache以及业务连续性控制功能 实体, 在 P-GW和 S-GW之间部署业务终结功能实体; 应用服务器上本地 Cache中的内容在远端 Cache中可以有也可以没有相应的副本,但远端业务 连续性控制功能实体保存有所有本地 Cache的索引, 即远端 Cache功能实 体可以通过计算获知本地 Cache是否命中。
应用服务器在收到 HTTP请求时, 无论本地是否命中都将此 HTTP信 令通过 S1-U的隧道转发到核心网,远端业务连续性控制功能实体转发此请 求到远端服务器,远端服务器收到请求后对 UE进行数据发送, 经过业务连 续性控制功能实体时由此实体进行判决,如果 Cache未命中,则进行緩存 , 并生成 Cache指针(Index ), 不管是否被命中, 内容都将继续向 UE转发, 同时通过 TCP扩展头定义私有的随路信息指示此内容是否被应用服务器上 的 Cache命中。 当内容通过 P-GW到达业务终结功能实体后, 由此实体检 查随路信息, 如果指示内容被应用服务器命中, 则将内容丢弃, 否则继续 向 UE进行转发。 如果内容继续经由 S-GW和 eNB转发到应用服务器后, 原先未被本地 Cache命中的内容将被緩存, 并生成 Cache Index, 如果已经 Cache命中则替换原有内容(容错处理)。
本地应用服务器在转发 HTTP请求时, 会在承载应用报文的 GTP-U报 文中增加一个私有的扩展头, 指示本地应用标识, 如果内容被命中还要携 带 Cache Index; 此信息经过业务终结功能实体时可以转换由私有的 TCP扩 展头承载, 当报文经过业务连续性控制功能实体时, 它记录此请求对应的 应用服务器以及 Cache Index等 TCP扩展头中的信息。 当 UE从一个 eNB 移动到另一个 eNB时, 如果应用服务器发生变化, 由于 UE的请求信息都 会通过应用服务器,且都会通过 GTP-U的扩展头携带本地应用标识和 Cache Index, 因此远端业务连续性控制功能实体知道应用服务器发生了变化, 且 知道新的应用服务器中内容是否被緩存在本地应用服务器, 因此业务可以 持续进行传送; 从有应用服务器的区域移动到无应用服务器的区域或者反 向移动时, 由于 UE的控制信息不在本地终结, 因此远端业务连续性控制功 能能感知到此变化, 并能知晓是否需要进行内容转发, 由此业务连续性也 得以保证。
计费合法监听处理, 有两种解决方案:
第一、 在核心网部署应用服务器网关, 完成与计费网关, 合法监听网 关的配合, 对计费由应用服务器产生话单, 并上报到应用服务器网关, 由 它汇总并上报到计费网关; 对合法监听, 启动后, 由应用服务器复制报文, 然后上报到应用服务器网关, 由应用服务器网关汇总上报合法监听网关。
第二、 对特定业务, 诸如在移动性处理的描述中提到的业务, 由于应 用层的控制信息持续不断的发往应用服务器, 且应用服务器的报文都要经 过 P-GW,因此计费和合法监听可以采用原有的 3GPP的标准方案,有 P-GW 完成, 对现有网元沖击很小。
本领域普通技术人员可以理解实现以上方法中的全部或部分步骤是可 以通过程序来指令相关的硬件来完成, 所述的程序可以存储于一计算机可 读介质中, 所述可读介质, 如: ROM/RAM、 磁碟、 光盘等。
例如, 本发明实施例提供的一种计算机程序产品, 包括计算机可读介 质, 该可读介质包括一组程序代码, 用于执行以上实施例所描述的任一种 通信方法。 本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中 的单元或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的单元可以按照实施例描 述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本实施例 的一个或多个装置中。 上述实施例的单元可以合并为一个单元, 也可以进 一步拆分成多个子单元。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修 改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不 使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利要求
1、 一种通信方法, 包括:
接入网设备接收业务报文;
所述接入网设备根据策略向应用服务器发送所接收的业务报文, 所述 应用服务器设置于接入网侧, 独立于所述接入网设备或设置于所述接入网 设备之内, 且所述应用服务器支持至少一种业务运行。
2、 根据权利要求 1所述的方法, 还包括:
在所述接入网设备与所述应用服务器之间建立用户面通道, 以通过所 述用户面通道发送所述业务报文。
3、 根据权利要求 2所述的方法, 通过应用与无线网络接口协议, 建立 所述用户面通道, 其中所述应用与无线网络接口协议包括控制面协议和用 户面协议, 所述用户面协议用于所述用户面通道上的信息传输, 所述控制 面协议用于所述用户面通道的建立, 且所述用户面通道的建立包括:
通过所述控制面协议, 在所述接入网设备与所述应用服务器之间建立 控制面链路;
通过所述控制面链路承载的控制信息, 在所述接入网设备与所述应用 服务器之间建立所述用户面通道。
4、 根据权利要求 3所述的方法, 所述控制面协议包括业务网络层协议 和传输网络层协议, 所述业务网络层协议包括所述控制信息; 所述传输网 络层协议包括物理层协议、 数据链路层协议、 网络层协议和传输层协议。
5、 根据权利要求 4所述的方法, 其特征在于, 所述控制信息包括状态 信息订阅请求消息, 所述状态信息订阅请求消息用于指示所述接入网设备 向所述应用服务器发送无线网络的状态信息。
6、 根据权利要求 4或 5所述的方法, 其特征在于, 所述控制信息包括策 略修改请求消息, 所述策略修改请求消息用于指示所述接入网设备向所述 应用服务器发送业务报文的策略。
7、 据权利要求 1所述的方法, 所述策略包括:
将所述接入网设备所接收的业务报文全部发送给所述应用服务器; 或 利用识别信息标识所述业务报文是否可以发送给所述应用服务器, 且 将可以发送给所述应用服务器的业务报文发送给所述应用服务器, 将不可 以发送给所述应用服务器的业务报文发送给核心网。
8、 一种通信方法, 包括:
应用服务器接收接入网设备发送的业务报文, 所述应用服务器设置于 接入网侧, 独立于所述接入网设备或设置于所述接入网设备之内, 且所述 应用服务器支持至少一种业务运行;
所述应用服务器处理所述业务报文。
9、 根据权利要求 8所述的方法, 还包括:
在所述接入网设备与所述应用服务器之间建立用户面通道, 以通过所 述用户面通道接收所述业务报文。
10、 根据权利要求 9所述的方法, 通过应用与无线网络接口协议, 建立 所述用户面通道, 其中所述应用与无线网络接口协议包括控制面协议和用 户面协议, 所述用户面协议用于所述用户面通道上的信息传输, 所述控制 面协议用于所述用户面通道的建立, 且所述用户面通道的建立包括:
通过所述控制面协议, 在所述接入网设备与所述应用服务器之间建立 控制面链路;
通过所述控制面链路承载的控制信息, 在所述接入网设备与所述应用 服务器之间建立所述用户面通道。
11、 根据权利要求 10所述的方法, 所述控制面协议包括业务网络层协 议和传输网络层协议, 所述业务网络层协议包括所述控制信息; 所述传输 网络层协议包括物理层协议、 数据链路层协议、 网络层协议和传输层协议。
12、 根据权利要求 11所述的方法, 其特征在于, 所述控制信息包括状 态信息订阅请求消息, 所述状态信息订阅请求消息用于指示所述接入网设 备向所述应用服务器发送无线网络的状态信息。
13、 根据权利要求 11或 12所述的方法, 其特征在于, 所述控制信息包 括策略修改请求消息, 所述策略修改请求消息用于指示所述接入网设备向 所述应用服务器发送业务报文的策略。
14、 根据权利要求 8至 13任一项所述的方法, 所述处理所述业务报文, 包括:
所述应用服务器解析所述业务报文;
根据解析后的业务报文, 运行所述业务报文对应的业务;
将运行结果反馈给所述接入网设备。
15、 根据权利要求 8至 13任一项所述的方法, 所述处理所述业务报文, 包括:
所述应用服务器解析所述业务报文;
若解析结果显示所述应用服务器支持所述业务报文对应的业务的运 行, 根据解析后的业务报文, 运行所述业务报文对应的业务, 将运行结果 反馈给所述接入网设备;
若解析结果显示所述应用服务器不支持所述业务报文对应的业务的运 行, 将所述业务报文回传给所述接入网设备, 或向核心网发送所述业务报 文, 或向所述接入网设备发送指示信令, 所述指示信令用于指示所述接入 网设备向核心网发送所述业务报文。
16、 根据权利要求 8至 13任一项所述的方法, 所述处理所述业务报文, 包括:
所述应用服务器解析所述业务报文;
若解析结果显示所述业务报文包括所述应用服务器支持的业务的更新 数据, 存储所述更新数据。
17、 一种接入网设备, 包括:
用于与用户设备进行通信的第一接口单元;
用于与核心网进行通信的第二接口单元;
用于与应用服务器进行通信的第三接口单元, 其中所述应用服务器设 置于接入网侧, 且独立于所述接入网设备或设置于所述接入网设备之内, 所述应用服务器支持至少一种业务运行;
处理器, 分别与所述第一接口单元、 第二接口单元和第三接口单元连 接, 且所述处理器用于通过所述第一接口单元或第二接口单元接收业务报 文, 且通过第三接口单元, 根据策略向所述应用服务器发送所接收的业务 报文。
18、 根据权利要求 17所述的接入网设备, 所述处理器还用于通过所述 第三接口单元在所述接入网设备与所述应用服务器之间建立用户面通道, 以通过所述用户面通道发送所述业务报文。
19、 根据权利要求 18所述的接入网设备, 所述第三接口单元协议为应 用与无线网络接口协议, 所述处理器通过所述应用与无线网络接口协议, 建立所述用户面通道, 其中所述应用与无线网络接口协议包括控制面协议 和用户面协议, 所述用户面协议用于所述用户面通道上的信息传输, 所述 控制面协议用于所述用户面通道的建立, 且所述用户面通道的建立包括: 通过所述控制面协议, 在所述接入网设备与所述应用服务器之间建立 控制面链路;
通过所述控制面链路承载的控制信息, 在所述接入网设备与所述应用 服务器之间建立所述用户面通道。
20、 根据权利要求 19所述的接入网设备, 所述控制面协议包括业务网 络层协议和传输网络层协议, 所述业务网络层协议包括所述控制信息; 所 述传输网络层协议包括物理层协议、 数据链路层协议、 网络层协议和传输 层协议。
21、 根据权利要求 20所述的接入网设备, 其特征在于, 所述控制信息 包括状态信息订阅请求消息, 所述状态信息订阅请求消息用于指示所述接 入网设备向所述应用服务器发送无线网络的状态信息。
22、 根据权利要求 20或 21所述的接入网设备, 其特征在于, 所述控制 信息包括策略修改请求消息, 所述策略修改请求消息用于指示所述接入网 设备向所述应用服务器发送业务报文的策略。
23、 据权利要求 17所述的接入网设备, 所述策略包括:
将所述接入网设备所接收的业务报文全部发送给所述应用服务器; 或 利用识别信息标识所述业务报文是否可以发送给所述应用服务器, 且 将可以发送给所述应用服务器的业务报文发送给所述应用服务器, 将不可 以发送给所述应用服务器的业务报文发送给核心网。
24、 一种应用服务器, 支持至少一种业务运行, 所述应用服务器位于 接入网侧, 且独立于接入网设备或设置于所述接入网设备之内, 所述应用 服务器包括:
用于与接入网设备进行通信的接口单元;
存储单元, 用于存储所述应用服务器所支持业务的业务数据; 处理单元, 分别与所述接口单元和所述存储单元连接, 所述处理单元 用于通过所述接口单元接收所述接入网设备发送的业务报文, 并处理所述 业务报文。
25、 根据权利要求 24所述的应用服务器, 所述处理单元还用于通过所 述接口单元在所述接入网设备与所述应用服务器之间建立用户面通道, 以 通过所述用户面通道接收所述业务报文。
26、 根据权利要求 25所述的应用服务器, 所述接口单元协议为应用与 无线网络接口协议, 所述处理单元通过所述应用与无线网络接口协议, 建 立所述用户面通道, 其中所述应用与无线网络接口协议包括控制面协议和 用户面协议, 所述用户面协议用于所述用户面通道上的信息传输, 所述控 制面协议用于所述用户面通道的建立, 且所述用户面通道的建立包括: 通过所述控制面协议, 在所述接入网设备与所述应用服务器之间建立 控制面链路;
通过所述控制面链路承载的控制信息, 在所述接入网设备与所述应用 服务器之间建立所述用户面通道。
27、 根据权利要求 26所述的应用服务器, 所述控制面协议包括业务网 络层协议和传输网络层协议, 所述业务网络层协议包括所述控制信息; 所 述传输网络层协议包括物理层协议、 数据链路层协议、 网络层协议和传输 层协议。
28、 根据权利要求 27所述的应用服务器, 其特征在于, 所述控制信息 包括状态信息订阅请求消息, 所述状态信息订阅请求消息用于指示所述接 入网设备向所述应用服务器发送无线网络的状态信息。
29、 根据权利要求 27或 28所述的应用服务器, 其特征在于, 所述控制 信息包括策略修改请求消息, 所述策略修改请求消息用于指示所述接入网 设备向所述应用服务器发送业务报文的策略。
30、 根据权利要求 24至 29任一项所述的应用服务器, 所述处理单元处 理所述业务 文, 包括:
解析所述业务报文;
根据解析后的业务报文, 运行所述业务报文对应的业务;
将运行结果反馈给所述接入网设备。
31、 根据权利要求 24至 29任一项所述的应用服务器, 所述处理单元处 理所述业务 文, 包括:
解析所述业务报文; 若解析结果显示所述处理单元支持所述业务报文对应的业务的运行, 根据解析后的业务报文, 运行所述业务报文对应的业务, 将运行结果反馈 给所述接入网设备;
若解析结果显示所述处理单元不支持所述业务报文对应的业务的运 行, 将所述业务报文回传给所述接入网设备, 或向核心网发送所述业务报 文, 或向所述接入网设备发送指示信令, 所述指示信令用于指示所述接入 网设备向核心网发送所述业务报文。
32、 根据权利要求 24至 29任一项所述的应用服务器, 所述处理单元处 理所述业务 文, 包括:
解析所述业务报文;
若解析结果显示所述业务报文包括所述处理单元支持的业务的更新数 据, 将所述更新数据存储至存储单元。
33、 一种通信系统, 其接入网侧设置有如权利要求 17至 23任一项所述 的接入网设备与如权利要求 24至 32任一项所述的应用服务器。
34、 一种计算机可读存储介质, 包括: 用于执行如权利要求 1~7任一项 所述的方法的程序。
35、 一种计算机可读存储介质, 包括: 用于执行如权利要求 8~16任一 项所述的方法的程序。
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