WO2010102481A1 - 一种保证数据不中断的方法、系统及策略服务器 - Google Patents

一种保证数据不中断的方法、系统及策略服务器 Download PDF

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Publication number
WO2010102481A1
WO2010102481A1 PCT/CN2009/073861 CN2009073861W WO2010102481A1 WO 2010102481 A1 WO2010102481 A1 WO 2010102481A1 CN 2009073861 W CN2009073861 W CN 2009073861W WO 2010102481 A1 WO2010102481 A1 WO 2010102481A1
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Prior art keywords
network
connection
flow
policy
source
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PCT/CN2009/073861
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English (en)
French (fr)
Inventor
琚凯
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中兴通讯股份有限公司
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Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP09841350.3A priority Critical patent/EP2408232B1/en
Priority to US13/148,417 priority patent/US8711701B2/en
Priority to ES09841350T priority patent/ES2710188T3/es
Publication of WO2010102481A1 publication Critical patent/WO2010102481A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0289Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0027Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/22Performing reselection for specific purposes for handling the traffic

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method, system and policy server for ensuring uninterrupted data.
  • One UE User Equipment
  • WiFi Wireless Fidelity
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the implementation of different multimedia services on the UE will have a lot of network connection options, and even different IP flows in the same service may be in Different network connections. In this way, it is very likely that congestion occurs due to a certain network connection, causing service interruption, while the bandwidth of other network connections is idle, resulting in waste of network resources.
  • the IP flow connection of a UE to the network in a multi-connection network environment corresponds to a service network connection, with numbers 1 to 5 corresponding to the top to bottom: VOIP (Voice over IP, IP voice), conference video, non-conference video, WEB browsing, FTP (File Transfer Protocol, File Transfer Protocol) Download the business.
  • VOIP Voice over IP
  • IP voice IP voice
  • conference video non-conference video
  • WEB browsing FTP (File Transfer Protocol, File Transfer Protocol) Download the business.
  • the VOIP and conference video are established on the connection defined by 3GPP (Third Generation Partnership Projects), and the conference video, WEB browsing and FTP download are established on non-3GPP connections. Due to the download of FTP, the non-3GPP connection is congested, and the UE will be very intuitive to reflect the decline of other service experiences established on the non-3GPP connection, such as the discontinuity of non-conference video.
  • the technical problem to be solved by the present invention is to solve the problem that the UE in the multi-network connection environment in the prior art is interrupted due to the congestion of a certain network connection, and proposes a data avoidance in the multi-network connection environment.
  • the present invention provides a method for ensuring uninterrupted data, which is used in a multi-network connection environment, and is applied between a user equipment UE connected to a plurality of networks and the plurality of networks, including:
  • the IP flow of the UE is migrated from the congested network connection to the uncongested network connection.
  • the above method may also have the following features:
  • the congestion of one or more network connections of the UE is known by the policy server.
  • the policy server learns that one or more network connections of the UE are congested, the IP flow of the UE is migrated from the congested network connection to the non-network connection.
  • the steps involved in a congested network connection include:
  • the policy server initiates an IP flow migration request to the UE, and instructs the UE to migrate the IP flow of the specified service from the network connection of the source network to the network connection of the destination network, where the source network is a congested network, and the destination The network is a network that is not congested;
  • the UE migrates the IP flow of the designated service from the network connection of the source network to the network connection of the destination network.
  • the above method may also have the following features:
  • the policy server receives the congestion notification message of the source network, and learns that one or more network connections of the UE are congested.
  • the above method may also have the following features:
  • the step of the policy server initiating an IP flow migration request to the UE includes: the policy server querying a preset connection policy, and selecting, according to the connection policy, a service that needs to be migrated connected to the source network as a designated service And selecting the destination network to initiate an IP flow migration request to the UE.
  • the above method may also have the following features:
  • the step of the UE migrating the IP flow of the specified service from the network connection of the source network to the network connection of the destination network includes:
  • the UE Establishing, by the UE, the IP flow connection of the specified service with the destination network; The UE disconnects the IP stream of the specified service from the source network.
  • the above method may also have the following features:
  • the method further includes:
  • the policy server records the current IP flow connection status of the UE.
  • the above method may also have the following features:
  • the policy server When the policy server is aware of the normal network connection of the source network, querying a preset connection policy, and initiating an IP flow migration request to the UE according to the connection policy, instructing the UE to use the specified service Migrating from the destination network back to the network connection of the source network;
  • the UE migrates the IP flow of the specified service back to the network connection of the source network.
  • the above method may also have the following features:
  • the policy server learns that the source network is restored to a normal network connection by receiving the de-congestion notification message of the source network.
  • the present invention also provides a system for ensuring uninterrupted data, which is applied in a multi-network connection environment, the system including a UE connected to a plurality of networks, the plurality of networks, and a policy server, wherein
  • the policy server is configured to: when the one or more network connections of the UE are known to be congested, query a preset connection policy, and initiate an IP flow migration request to the UE according to the connection policy, indicating the location
  • the UE migrates the IP flow of the designated service from the network connection of the source network to the network connection of the destination network;
  • the UE is configured to: migrate the IP flow of the specified service from a network connection of the source network to a network connection of the destination network;
  • the source network is a congested network
  • the destination network is a non-congested network.
  • the policy server is further configured to: when learning that the source network is restored to a normal network connection, Querying a preset connection policy, and initiating an IP flow migration request to the UE according to the connection policy, instructing the UE to migrate the IP flow of the specified service from the destination network to the network connection of the source network Up;
  • the UE is further configured to: migrate the IP flow of the specified service back to the network connection of the source network.
  • the present invention also provides a policy server for ensuring uninterrupted data, which is applied to a multi-network connection environment, and the policy server is configured to:
  • the UE can migrate the IP flow of the designated service from the network connection of the source network to the network connection of the destination network;
  • the source network is a congested network
  • the destination network is a non-congested network.
  • the policy server may be further configured to: when the normal network connection of the source network is learned, query a preset connection policy, and initiate an IP flow migration request to the UE according to the connection policy, indicating the UE Migrating the IP flow of the specified service from the destination network back to the network connection of the source network;
  • the UE can migrate the IP flow of the specified service back to the network connection of the source network.
  • FIG. 2 is a flow chart of a method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of IP flow migration of an application example of the present invention.
  • FIG. 4 is a schematic diagram of IP flow back migration of an application example of the present invention.
  • FIG. 5 is a flowchart of an IP flow migration process of an application example of the present invention.
  • the IP flow of the UE is migrated from the congested network connection to the uncongested network connection.
  • the method of the embodiment of the present invention includes the following steps:
  • Step 201 When the policy server learns that one or more network connections of the UE are congested, initiate an IP flow migration request, and instruct the UE to migrate the IP flow of the designated service from the network connection of the source network to the network connection of the destination network.
  • the source network is a congested network
  • the destination network is a non-congested network;
  • the policy server receives the congestion notification message of the source network, and learns that one or more network connections of the UE are congested; and the source network sends a congestion notification message to the policy server to use the existing
  • the technical mechanism is completed and will not be described here;
  • the policy server queries a preset connection policy, and selects a service to be migrated connected to the source network as a designated service according to the connection policy, and selects a destination network to initiate an IP flow migration request to the UE;
  • connection policies may be set for different networks, different network operators, and the like; the connection policy may be related to network congestion status, network priority of the UE service, and bandwidth occupied by the service;
  • Step 202 The UE establishes an IP flow connection of the specified service with the destination network. Specifically, the step includes:
  • Step 203 The UE disconnects the IP flow of the specified service from the source network.
  • the step includes:
  • the UE sends a service disconnection request to the source network, and requests to disconnect the IP flow connection of the specified service.
  • the source network returns a service disconnection success response, and the service disconnects successfully, indicating that the IP flow is successfully migrated from the source network to the destination network.
  • the steps 202 to 203 are processes in which the UE migrates the IP flow of the specified service from the network connection of the source network to the network connection of the destination network.
  • the UE sends a notification that the IP flow migration is completed to the policy server; the policy server records the current IP flow connection status of the UE.
  • the IP stream migration request is initiated, and the UE is instructed to migrate the IP flow of the specified service from the destination network to the network connection of the source network, where the UE And migrating the IP stream of the specified service back to the network connection of the source network according to the IP stream migration request.
  • the policy server learns that the source network recovers the normal network connection, it queries the pre-set connection policy, and initiates an IP flow migration request according to the connection policy.
  • the policy server receives the de-congestion notification message of the source network, and learns that the source network restores a normal network connection; and the sending, by the source network, the un-congestion notification message to the policy server may be completed by using a prior art mechanism. , will not repeat them here.
  • the system of the embodiment of the present invention includes a UE connected to multiple networks, the multiple networks, and a policy server,
  • the policy server is configured to query a preset connection policy when the one or more network connections of the UE are found to be congested, and instruct the UE to specify the service according to the IP flow migration request initiated by the connection policy.
  • the IP flow is migrated from the network connection of the source network to the network connection of the destination network;
  • the UE is configured to migrate the IP flow of the specified service from the network connection of the source network to the network connection of the destination network;
  • the source network is a congested network
  • the destination network is a non-congested network.
  • the policy server is further configured to: when the normal network connection of the source network is learned, query a preset connection policy, and initiate an IP flow migration request according to the connection policy, and instruct the UE to use the IP flow of the specified service. Migrating from the destination network to the network connection of the source network; the UE is further configured to migrate the IP flow of the specified service back to the network connection of the source network.
  • Figure 3 and Figure 4 Take Figure 3 and Figure 4 as an example.
  • the upper part of Figure 3 is the same as Figure 1 and is the IP flow connection of a UE to the network.
  • Each dotted line in the figure corresponds to a service network connection.
  • the numbers from 1 to 5 correspond to: VOIP, conference video, non-conference video, WEB browsing, FTP download service.
  • the VOIP and conference video are established on the connection defined by 3GPP, and the conference video, WEB browsing and FTP download are established on the non-3GPP connection. Due to the download of FTP, the non-3GPP connection is congested, and the UE will be very intuitive to reflect the decline of other service experiences established on the non-3GPP connection, such as the discontinuity of non-conference video.
  • the network cooperates with the UE to migrate the IP stream of the non-conference video to the 3GPP connection, achieving the effect shown in the lower half of FIG. And after the FTP download is completed, after the network congestion is over, the newly migrated IP stream is re-migrated back to the non-3GPP connection, which is the effect shown in FIG.
  • connection policies are defined on the policy server according to different networks and different network operators. Taking the services shown in FIG. 3 and FIG. 4 as an example, the connection policy of the "non-conference video" service is preset on the policy server as the first preferred network is "WLan connection", and the second preferred network is "LTE connection”.
  • the first preferred network is congested and the like, the service cannot be continued, or the service experience is degraded, after the policy server learns, the UE initiates a request to migrate the service to the second preferred network by querying a preset connection policy. .
  • Step A The UE is in a multi-connection network environment.
  • the VOIP and the conference video use a trusted connection type defined by the 3GPP, such as an LTE connection, instead of using conference video, WEB browsing, and FTP downloading.
  • 3GPP trusted connection type such as WLan (Wireless Local Area Network);
  • Step B When the FTP download causes the WLan connection to be congested, affecting the establishment of other service experiences on the WLan connection, the network monitors the congestion and notifies the policy server. After the policy server receives the notification, according to the preset connection. Strategy query to another industry on WLan connection
  • the second preferred network of the non-conference video is an "LTE connection", and the policy server sends a message to the UE requesting to migrate the IP flow of the non-conference video service to the LTE connection;
  • Step C After receiving the notification from the policy server, the UE first initiates a non-conference video service connection request on the LTE connection, and after receiving the network success response, initiates a request to disconnect the non-conference video service connection on the WLan connection, and the network succeeds. After the response, the data of the non-conference video service will be migrated from the WLAN connection to the LTE connection;
  • Step D After the FTP download is completed, the network detects that the WLan connection is no longer congested, that is, the policy server sends a request to the UE to migrate the service originally established on the WLan connection back to the WLan connection.
  • IP flow migration process is further described below with reference to FIG. 5:
  • Step 501 After querying the connection policy, the policy server sends an IP flow migration request to the UE through the LTE network according to the query result, where the request includes the service type to be migrated, and the information that is migrated from the LTE network to the WLan network.
  • Step 502 The LTE network forwards the IP stream migration request to the UE.
  • Step 503 The UE returns an IP stream migration request response to the policy server by using the LTE network.
  • Step 504 The LTE network forwards the IP stream migration request response to the policy server.
  • Step 505 The UE initiates a service establishment request to the WLan network, where the service type is a service type in the received IP flow migration request message.
  • Step 506 The WLan network responds to the establishment of the service successfully.
  • Step 507 The UE initiates a service disconnection request to the LTE network, where the service type is a service type in the received IP flow migration request message.
  • Step 508 The LTE network responds to the service disconnection successfully.
  • Step 509 The UE sends a notification that the IP flow migration is completed to the policy server, and the policy server records the current service connection status of the UE.
  • the present invention ensures that data is not interrupted when multiple network connections are established at the same time, and expands the bandwidth and optimizes the use of bandwidth by migrating IP flows or re-establishing IP flows.
  • the policy server is a functional entity of the UE network connection management, and may be located in the same server as other functional entities in an actual application, which is not specifically limited by the present invention;
  • a connection policy is set on the device, and the policy server determines, according to the connection policy and the current IP flow connection status of the UE, whether IP flow migration is required, and which service IP flow is migrated to which network.
  • IP flow migration is required, Initiating an IP flow migration request to the UE; and determining whether to migrate the migrated IP flow back according to the connection policy and the current IP flow connection status of the UE, thereby optimizing bandwidth usage and ensuring the user data service experience.
  • the invention can ensure that the user can still have an uninterrupted data connection experience when a certain network connection is congested; the use of the network bandwidth is optimized, and the user data service experience is not significantly reduced when the network is congested; When the network congestion is improved, different services can be migrated back to the original connection in time.

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Description

一种保证数据不中断的方法、 系统及策略服务器
技术领域
本发明涉及移动通信技术, 尤其涉及一种保证数据不中断的方法、 系统 及策略服务器。
背景技术
在未来的移动互联网时代,网络环境非常复杂,一个 UE( User Equipment, 用户设备 )有可能同时与网络存在多种连接, 例如 WiFi ( Wireless Fidelity ) , GPRS ( General Packet Radio Service, 通用分组无线业务 ) , LTE ( Long Term Evolution, 长期演进)等等, 在这种情况下, UE上不同的多媒体业务的实现 将有非常多的网络连接的选择, 甚至同一个业务内不同的 IP流都将可能处于 不同的网络连接上。 这样, 很可能出现由于某个网络连接出现拥塞, 导致业 务中断, 而其它网络连接的带宽却有空闲, 造成网络资源的浪费。
如图 1所示,为多连接网络环境下,某 UE与网络连接的 IP流连接情况。 图中每条虚线对应一种业务的网络连接,由上到下编号 1 ~ 5分别对应: VOIP ( Voice over IP, IP话音) 、 会议视频、 非会议视频、 WEB浏览、 FTP ( File Transfer Protocol, 文件传输协议) 下载业务。 其中 VOIP、 会议视频建立于 3GPP ( Third Generation Partnership Projects, 第三代伙伴组织计划)定义的连 接上, 而非会议视频、 WEB浏览以及 FTP下载建立于非 3GPP的连接上。 由 于 FTP的下载, 导致非 3GPP的连接产生了拥塞, 那么从 UE上会非常直观 的反映出其它建立于非 3GPP连接之上的业务体验的下降, 例如非会议视频 产生断续等现象。
发明内容
本发明要解决的技术问题就是解决现有技术中处于多网络连接环境中的 UE由于某个网络连接出现拥塞的情况而导致业务中断的问题,提出一种多网 络连接环境中保证数据不中断的方法、 系统及策略服务器, 达到扩大带宽, 优化带宽的作用。
为了解决上述技术问题, 本发明提供一种保证数据不中断的方法, 其用 于多网络连接环境中, 应用于与多种网络连接的用户设备 UE以及所述多种 网络之间, 包括:
当 UE的一种或多种网络连接出现拥塞时, 将所述 UE的 IP流从拥塞的 网络连接迁移到不拥塞的网络连接上去。
进一步地, 上述方法还可具有以下特点:
UE的一种或多种网络连接出现拥塞是通过策略服务器获知的,当所述策 略服务器获知 UE的一种或多种网络连接出现拥塞时, 将 UE的 IP流从拥塞 的网络连接迁移到不拥塞的网络连接上去的所述步骤包括:
所述策略服务器向所述 UE发起 IP流迁移请求, 指示所述 UE将指 定业务的 IP流从源网络的网络连接迁移到目的网络的网络连接上去, 所 述源网络为拥塞网络, 所述目的网络为不拥塞的网络; 以及
所述 UE将所述指定业务的 IP流从所述源网络的网络连接迁移到所 述目的网络的网络连接上。
进一步地, 上述方法还可具有以下特点:
所述策略月良务器通过接收所述源网络的拥塞通知消息, 获知 UE的一种 或多种网络连接出现拥塞。
进一步地, 上述方法还可具有以下特点:
所述策略服务器向所述 UE发起 IP流迁移请求的所述步骤包括: 所述策略服务器查询预先设定的连接策略, 并根据所述连接策略选择与 源网络连接的需要迁移的业务作为指定业务, 并选择目的网络, 向所述 UE 发起 IP流迁移请求。
进一步地, 上述方法还可具有以下特点:
所述 UE将所述指定业务的 IP流从源网络的网络连接迁移到目的网络的 网络连接上的所述步骤包括:
所述 UE与所述目的网络建立所述指定业务的 IP流连接; 以及 所述 UE与所述源网络断开所述指定业务的 IP流连接。
进一步地, 上述方法还可具有以下特点:
所述 UE与所述源网络断开所述指定业务的 IP流连接后, 所述方法还包 括:
向所述策略服务器发送 IP流迁移完成的通知;
所述策略服务器记录所述 UE当前的 IP流连接状态。
进一步地, 上述方法还可具有以下特点:
当所述策略服务器获知所述源网络的恢复正常网络连接时, 查询预先设 定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请求, 指示所 述 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网络的网络连接 上; 以及
所述 UE将所述指定业务的 IP流迁移回所述源网络的网络连接上。
进一步地, 上述方法还可具有以下特点:
所述策略服务器通过接收所述源网络的解除拥塞通知消息, 获知所述源 网络的恢复正常网络连接。
为了解决上述技术问题, 本发明还提供一种保证数据不中断的系统, 其 应用在多网络连接环境中, 所述系统包括与多种网络连接的 UE、所述多种网 络以及策略服务器, 其中
所述策略服务器设置成: 当获知所述 UE的一种或多种网络连接出现拥 塞时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流 迁移请求, 指示所述 UE将指定业务的 IP流从源网络的网络连接迁移到目的 网络的网络连接上去; 以及
所述 UE设置成: 将所述指定业务的 IP流从源网络的网络连接迁移到目 的网络的网络连接上;
其中, 所述源网络为拥塞网络, 所述目的网络为不拥塞网络。
进一步地, 上述系统还可具有以下特点:
所述策略服务器还设置成: 当获知所述源网络的恢复正常网络连接时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请 求, 指示所述 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网络 的网络连接上; 以及
所述 UE还设置成: 将所述指定业务的 IP流迁移回所述源网络的网络连 接上。
为了解决上述技术问题, 本发明还提供了一种用于保证数据不中断的策 略服务器, 其应用于多网络连接环境中, 所述策略服务器设置成:
当获知 UE的一种或多种网络连接出现拥塞时, 查询预先设定的连接策 略, 并根据所述连接策略向所述 UE发起 IP流迁移请求, 指示所述 UE将指 定业务的 IP流从源网络的网络连接迁移到目的网络的网络连接上去;
由此所述 UE能将所述指定业务的 IP流从源网络的网络连接迁移到目的 网络的网络连接上;
其中, 所述源网络为拥塞网络, 所述目的网络为不拥塞网络。
所述策略服务器还可设置成: 当获知所述源网络的恢复正常网络连接时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请 求, 指示所述 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网络 的网络连接上;
由此所述 UE 能将所述指定业务的 IP 流迁移回所述源网络的网络连接 上。
本发明的有益效果是:
1、保证在某个网络连接出现拥塞的情况下, 用户仍然可以拥有不间断的 数据连接体验;
2、 优化了网络带宽的使用, 在网络拥塞时, 保证用户数据业务体验不会 有明显的下降;
3、在网络拥塞情况好转时, 可以及时的将不同的业务迁移回原本的连接 上。 附图概述 图 1是多种网络连接的示例;
图 2是本发明实施例的方法流程图;
图 3是本发明应用示例的 IP流迁移示意图;
图 4是本发明应用示例的 IP流回迁移示意图; 以及
图 5是本发明应用示例的 IP流迁移过程的流程图。
本发明的较佳实施方式
在本发明中, 当 UE的一种或多种网络连接出现拥塞时, 将 UE的 IP流 从拥塞的网络连接迁移到不拥塞的网络连接上去。
下面结合附图及具体实施例对本发明进行详细说明。
如图 2所示, 本发明实施例的方法包括如下步骤:
步骤 201 , 当策略服务器获知 UE的一种或多种网络连接出现拥塞时,发 起 IP流迁移请求,指示 UE将指定业务的 IP流从源网络的网络连接迁移到目 的网络的网络连接上去; 所述源网络为拥塞网络, 所述目的网络为不拥塞网 络;
优选地, 所述策略月良务器通过接收所述源网络的拥塞通知消息, 获知 UE 的一种或多种网络连接出现拥塞; 所述源网络向策略服务器发送拥塞通知消 息可以釆用现有技术的机制完成, 此处不再赘述;
优选地, 所述策略服务器查询预先设定的连接策略, 并根据所述连接策 略选择与源网络连接的需要迁移的业务作为指定业务, 并选择目的网络, 向 UE发起 IP流迁移请求;
优选地, 针对不同网络、 不同网络运营商等具体情况可以设定不同的连 接策略; 所述连接策略可以与网络拥塞状况、 UE业务的网络优先级以及业务 占用的带宽等内容相关;
步骤 202, UE与所述目的网络建立所述指定业务的 IP流连接; 具体来说, 优选地, 本步骤包括:
UE向目的网络发送业务建立请求,请求建立所述指定业务的 IP流连接; 所述目的网络返回业务建立成功响应, 业务建立成功。
步骤 203 , UE与所述源网络断开所述指定业务的 IP流连接;
具体来说, 优选地, 本步骤包括:
UE向源网络发送业务断开请求, 请求断开所述指定业务的 IP流连接; 所述源网络返回业务断开成功响应, 业务断开成功, 表示 IP流成功从源 网络迁移到目的网络。
所述步骤 202 ~ 203为 UE将所述指定业务的 IP流从源网络的网络连接迁 移到目的网络的网络连接上的过程。
优选地, 在步骤 203执行之后, UE向策略服务器发送 IP流迁移完成的 通知; 所述策略服务器记录 UE当前的 IP流连接状态。
优选地, 当策略服务器获知所述源网络恢复正常网络连接时, 发起 IP流 迁移请求, 指示 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网 络的网络连接上, UE根据所述 IP流迁移请求, 将所述指定业务的 IP流迁移 回所述源网络的网络连接上。
优选地, 当策略服务器获知所述源网络的恢复正常网络连接时, 查询预 先设定的连接策略, 并根据所述连接策略发起 IP流迁移请求。
优选地, 所述策略服务器通过接收所述源网络的解除拥塞通知消息, 获 知所述源网络恢复正常网络连接; 所述源网络向策略服务器发送解除拥塞通 知消息可以釆用现有技术的机制完成, 此处不再赘述。
本发明实施例的系统, 包括与多种网络连接的 UE、 所述多种网络, 以及 策略服务器,
所述策略 Λ良务器用于当获知 UE的一种或多种网络连接出现拥塞时, 查 询预先设定的连接策略, 并根据所述连接策略发起的 IP 流迁移请求, 指示 UE将指定业务的 IP流从源网络的网络连接迁移到目的网络的网络连接上去; 所述 UE用于将所述指定业务的 IP流从源网络的网络连接迁移到目的网 络的网络连接上;
其中, 所述源网络为拥塞网络, 所述目的网络为不拥塞网络。 所述策略服务器还用于当获知所述源网络的恢复正常网络连接时, 查询 预先设定的连接策略, 并根据所述连接策略发起 IP流迁移请求, 指示 UE将 所述指定业务的 IP流从所述目的网络迁移回所述源网络的网络连接上; 所述 UE还用于将所述指定业务的 IP流迁移回所述源网络的网络连接上。
下面以具体应用实例进一步阐述:
以图 3、 图 4为例, 其中图 3的上半部与图 1一样, 是某 UE与网络连接 的 IP流连接情况。图中每条虚线对应一种业务的网络连接,由上到下编号 1 ~ 5分别对应: VOIP、 会议视频、 非会议视频、 WEB浏览、 FTP下载业务。 其 中 VOIP、 会议视频建立于 3GPP定义的连接上, 而非会议视频、 WEB浏览 以及 FTP下载建立于非 3GPP的连接上。 由于 FTP的下载, 导致非 3GPP的 连接产生了拥塞,那么从 UE上会非常直观的反映出其它建立于非 3GPP连接 之上的业务体验的下降, 例如非会议视频产生断续等现象。 在这种情况下, 通过本发明, 网络与 UE配合, 将非会议视频这路 IP流迁移到 3GPP连接, 达到图 3下半部所示的效果。 并且可以在 FTP下载完成, 网络拥塞结束后, 重新将刚迁移过去的 IP流迁移回非 3GPP连接上来,这就是图 4所示的效果。
策略服务器上根据不同网络、 不同网络运营商等具体情况, 会有定义不 同的连接策略。 以图 3、 图 4 中所示的业务为例, 策略服务器上预先设定了 "非会议视频" 业务的连接策略为第一优选网络为 "WLan连接" , 第二优 选网络为 "LTE连接" , 当第一优选网络发生拥塞等导致业务无法继续进行 或者业务体验下降时, 策略服务器得知后, 会通过查询预先设定的连接策略, 向 UE发起将该业务迁移到第二优选网络的请求。
以图 3、 图 4为例, 包括如下步骤:
步骤 A. UE处于多连接网络环境中, UE使用的业务中, VOIP、 会议视 频使用的是 3GPP定义的可信任的连接类型,例如 LTE连接, 而非会议视频、 WEB浏览、 FTP下载使用的是非 3GPP信任的连接类型,例如 WLan( Wireless Local Area Network, 无线局域网) ;
步骤 B. 当 FTP下载导致 WLan连接产生拥塞, 影响到建立与 WLan连 接上的其它业务体验时, 网络监测到拥塞的情况, 并通知策略服务器, 策略 服务器收到通知后, 根据预先设定的连接策略查询到 WLan连接上另一个业 务非会议视频的第二优选网络为 "LTE连接" , 策略服务器向 UE发送要求 迁移非会议视频业务的 IP流到 LTE连接上的消息;
步骤 C. UE收到策略服务器的通知后, 首先在 LTE连接上发起非会议 视频业务连接请求, 在收到网络成功响应后, 在 WLan连接上发起断开非会 议视频业务连接的请求,网络成功响应后,非会议视频业务的数据将从 WLAN 连接迁移到 LTE连接上;
步骤 D. 当 FTP下载完成后, 网络监测到 WLan连接不再存在拥塞的情 况, 即通过策略服务器向 UE发送将原本建立于 WLan连接上的业务迁移回 WLan连接上来的请求。
下面结合附图 5对 IP流迁移过程进一步描述:
步骤 501 , 策略服务器查询连接策略后, 根据查询结果, 通过 LTE网络 向 UE发送 IP流迁移请求, 请求中包括需要迁移的业务类型, 以及从 LTE网 络向 WLan网络迁移的信息;
步骤 502 , LTE网络将 IP流迁移请求转发给 UE;
步骤 503 , UE通过 LTE网络向策略服务器返回 IP流迁移请求响应; 步骤 504, LTE网络将 IP流迁移请求响应转发给策略服务器;
步骤 505, UE向 WLan网络发起业务建立请求,业务类型为收到 IP流迁 移请求消息中的业务类型;
步骤 506, WLan网络响应业务建立成功;
步骤 507, UE向 LTE网络发起业务断开请求, 业务类型为收到 IP流迁 移请求消息中的业务类型;
步骤 508, LTE网络响应业务断开成功;
步骤 509, UE向策略服务器发送 IP流迁移完成的通知, 策略服务器将 UE目前的业务连接状况记录下来。
综上所述, 本发明在多种网络连接同时建立的情况下, 保证数据不中断, 并通过迁移 IP流或者重新建立 IP流的方式, 实现扩大带宽, 优化带宽使用 的作用。 其中, 策略服务器是 UE 网络连接管理的功能实体, 在实际应用中 可与其它功能实体位于同一服务器, 本发明不做具体限定; 在所述策略服务 器上设置有连接策略, 所述策略服务器根据连接策略以及 UE当前的 IP流连 接状态, 判断是否需要 IP流迁移, 以及将哪个业务的 IP流迁移到哪个网络 上去, 若需要 IP流迁移, 则向 UE发起 IP流迁移请求; 以及, 根据连接策略 以及 UE当前的 IP流连接状态, 判断是否把迁移的 IP流再迁移回去,从而优 化带宽使用, 保证用户数据业务体验。
当然, 本发明还可有其它多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性
本发明能够保证在某个网络连接出现拥塞的情况下, 用户仍然可以拥有 不间断的数据连接体验; 优化了网络带宽的使用, 在网络拥塞时, 保证用户 数据业务体验不会有明显的下降; 在网络拥塞情况好转时, 可以及时的将不 同的业务迁移回原本的连接上。

Claims

权 利 要 求 书
1、 一种保证数据不中断的方法, 其用于多网络连接环境中, 应用于与多 种网络连接的用户设备 UE以及所述多种网络之间, 所述方法包括:
当 UE的一种或多种网络连接出现拥塞时, 将所述 UE的 IP流从拥塞的 网络连接迁移到不拥塞的网络连接上去。
2、 如权利要求 1所述的方法, 其中:
UE的一种或多种网络连接出现拥塞是通过策略服务器获知的,当所述策 略服务器获知 UE的一种或多种网络连接出现拥塞时, 将 UE的 IP流从拥塞 的网络连接迁移到不拥塞的网络连接上去的所述步骤包括:
所述策略服务器向所述 UE发起 IP流迁移请求, 指示所述 UE将指 定业务的 IP流从源网络的网络连接迁移到目的网络的网络连接上去, 所 述源网络为拥塞网络, 所述目的网络为不拥塞的网络; 以及
所述 UE将所述指定业务的 IP流从所述源网络的网络连接迁移到所 述目的网络的网络连接上。
3、 如权利要求 2所述的方法, 其中:
所述策略月良务器通过接收所述源网络的拥塞通知消息, 获知 UE的一种 或多种网络连接出现拥塞。
4、 如权利要求 2所述的方法, 其中:
所述策略服务器向所述 UE发起 IP流迁移请求的所述步骤包括: 所述策略服务器查询预先设定的连接策略, 并根据所述连接策略选择与 源网络连接的需要迁移的业务作为指定业务, 并选择目的网络, 向所述 UE 发起 IP流迁移请求。
5、 如权利要求 2所述的方法, 其中
所述 UE将所述指定业务的 IP流从源网络的网络连接迁移到目的网络的 网络连接上的所述步骤包括:
所述 UE与所述目的网络建立所述指定业务的 IP流连接; 以及 所述 UE与所述源网络断开所述指定业务的 IP流连接。
6、 如权利要求 5所述的方法, 其中所述 UE与所述源网络断开所述指定 业务的 IP流连接后, 所述方法还包括:
向所述策略服务器发送 IP流迁移完成的通知; 以及
所述策略服务器记录所述 UE当前的 IP流连接状态。
7、 如权利要求 2 ~ 6中任一项所述的方法, 其中
当所述策略服务器获知所述源网络的恢复正常网络连接时, 查询预先设 定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请求, 指示所 述 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网络的网络连接 上; 以及
所述 UE将所述指定业务的 IP流迁移回所述源网络的网络连接上。
8、 如权利要求 7所述的方法, 其中:
所述策略服务器通过接收所述源网络的解除拥塞通知消息, 获知所述源 网络的恢复正常网络连接。
9、 一种用于保证数据不中断的系统, 其应用在多网络连接环境中, 所述 系统包括与多种网络连接的 UE、 所述多种网络以及策略服务器, 其中: 所述策略服务器设置成: 当获知所述 UE的一种或多种网络连接出现拥 塞时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流 迁移请求, 指示所述 UE将指定业务的 IP流从源网络的网络连接迁移到目的 网络的网络连接上去; 以及
所述 UE设置成: 将所述指定业务的 IP流从源网络的网络连接迁移到目 的网络的网络连接上;
其中, 所述源网络为拥塞网络, 所述目的网络为不拥塞网络。
10、 如权利要求 9所述的系统, 其中
所述策略服务器还设置成: 当获知所述源网络的恢复正常网络连接时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请 求, 指示所述 UE将所述指定业务的 IP流从所述目的网络迁移回所述源网络 的网络连接上; 以及
所述 UE还设置成: 将所述指定业务的 IP流迁移回所述源网络的网络连 接上。
11、 一种用于保证数据不中断的策略服务器, 其应用在多网络连接环境 中, 所述策略服务器设置成:
当获知 UE的一种或多种网络连接出现拥塞时, 查询预先设定的连接策 略, 并根据所述连接策略向所述 UE发起 IP流迁移请求, 指示所述 UE将指 定业务的 IP流从源网络的网络连接迁移到目的网络的网络连接上去;
由此所述 UE能将所述指定业务的 IP流从源网络的网络连接迁移到目的 网络的网络连接上;
其中, 所述源网络为拥塞网络, 所述目的网络为不拥塞网络。
12、 如权利要求 11所述的策略服务器, 还设置成:
当获知所述源网络的恢复正常网络连接时, 查询预先设定的连接策略, 并根据所述连接策略向所述 UE发起 IP流迁移请求, 指示所述 UE将所述指 定业务的 IP流从所述目的网络迁移回所述源网络的网络连接上;
由此所述 UE 能将所述指定业务的 IP 流迁移回所述源网络的网络连接 上。
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CN101835201B (zh) 2014-08-13
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