WO2013091204A1 - 一种终端的重定向方法及装置 - Google Patents

一种终端的重定向方法及装置 Download PDF

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Publication number
WO2013091204A1
WO2013091204A1 PCT/CN2011/084397 CN2011084397W WO2013091204A1 WO 2013091204 A1 WO2013091204 A1 WO 2013091204A1 CN 2011084397 W CN2011084397 W CN 2011084397W WO 2013091204 A1 WO2013091204 A1 WO 2013091204A1
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WO
WIPO (PCT)
Prior art keywords
network
mode terminal
cdma
dual mode
carrier
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PCT/CN2011/084397
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English (en)
French (fr)
Inventor
扈曙辉
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 PCT/CN2011/084397 priority Critical patent/WO2013091204A1/zh
Priority to CN201180003147.0A priority patent/CN102511183B/zh
Priority to US13/793,435 priority patent/US20130189989A1/en
Publication of WO2013091204A1 publication Critical patent/WO2013091204A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0066Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • H04W36/144Reselecting a network or an air interface over a different radio air interface technology
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for redirecting a terminal.
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • FIG. 1 The existing CDMA EVDO (Code Division Multiple Access Evolution Data Only) network coverage is very large and covers a wide area.
  • the LTE network deployed in the hotspot area is superimposed on the EVDO with respect to the LTE network deployed in the hotspot area, forming an overlapping coverage area of EVDO and LTE.
  • the dual mode terminal located in the overlapping coverage area is not suitable for data services in the LTE network, such as LTE signal degradation, LTE overload, etc.
  • the dual mode terminal needs to be redirected from the LTE network to the CDMA EVDO network.
  • the networking of the dual-mode terminal moving from the LTE network to the CDMA EVDO network is as follows:
  • eAN evolved Access Network
  • eNB evolved Node B: Provides LTE air interface wireless access for terminals.
  • HSGW HRPD Serving Gateway: Provides service-side data gateway aggregation for several eANs and provides PPP dial-up connectivity for terminals.
  • S-GW Service Gateway
  • PGW Packet Gateway, Packet Data Gateway
  • IP packet data gateway which supports EVDO and LTE network access, is responsible for assigning IP addresses to terminals, and is responsible for connecting terminals to IP networks for terminal services.
  • the redirection method in the prior art causes the dual mode terminal to interrupt the number of layers on the terminal during the redirection process. According to the business for a period of time, the user experience is poor. Summary of the invention
  • the embodiment of the invention provides a method for redirecting a terminal, so as to reduce the service interruption time of the dual-mode terminal in the process of redirection.
  • an aspect of the present invention provides a method for redirecting a terminal, including:
  • the dual mode terminal receives the redirect message sent by the LTE base station, where the redirect message includes the redirect target carrier configured by the LTE base station for the dual mode terminal, where the redirect target carrier is a preset dual mode terminal.
  • the redirect message includes the redirect target carrier configured by the LTE base station for the dual mode terminal, where the redirect target carrier is a preset dual mode terminal.
  • the dual mode terminal performs session negotiation with the CDMA access network, and learns that the CDMA access network is a reserved carrier designated by the dual mode terminal, and the resident carrier is a preset dual mode terminal in the CDMA. a carrier that is permanently resident in the network;
  • the dual mode terminal searches for the redirected target carrier in the CDMA network, and initiates an access procedure on the redirected target carrier.
  • Another aspect of the present invention also provides a dual mode terminal, including:
  • a receiving unit configured to receive a redirect message sent by the LTE base station, where the redirect message includes a redirect target carrier configured by the LTE base station for the dual mode terminal, where the redirect target carrier is a preset dual mode The fixed carrier of the terminal in the CDMA network;
  • a session negotiation unit configured to perform session negotiation with the CDMA access network, and learn that the CDMA access network is a camping carrier designated by the dual mode terminal, where the resident carrier is a preset dual mode terminal. a fixed-resident carrier in a CDMA network;
  • a search unit configured to search for the redirected target carrier in the CDMA network
  • An access unit configured to initiate an access procedure on the redirected target carrier.
  • the redirection method of the terminal provided by the present invention firstly sets a carrier that is fixedly camped on by the dual-mode terminal in the CDMA network, and then the LTE base station sends a redirection message to the dual-mode terminal, where the redirection message includes the configuration of the LTE base station.
  • the dual mode terminal performs session negotiation with the CDMA access network, and learns that the CDMA access network is a resident carrier designated by the dual mode terminal, and the redirected target carrier and the resident carrier are both a carrier that is fixedly resident in a CDMA network for a preset dual mode terminal; when the dual mode terminal is redirected from the LTE network to the CDMA network, searching for a redirected target carrier in the CDMA network, and redirection in the CDMA network Head The access procedure is initiated on the standard carrier.
  • the technical solution provided by the present invention reduces the service interruption time when the dual mode terminal is redirected from the LTE network to the CDMA network, thereby improving the user experience.
  • FIG. 1 is a network diagram of air interfaces of a CDAM EVDO network and an LTE network in the background art
  • FIG. 2 is a networking diagram of a dual mode terminal moving from an LTE network to a CDMA EVDO network in the background;
  • FIG. 3 is a flowchart of a method for redirecting a terminal according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for redirecting a terminal according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a dual mode terminal according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are intended to fall within the scope of the invention.
  • the terms “system” and “network” are used interchangeably herein.
  • the method for redirecting the dual mode terminal from the LTE network to the CDMA network is:
  • the LTE base station sends a redirect message to the dual mode terminal, where the redirect message indicates the pair
  • the mode terminal is redirected to a certain carrier of the CDMA network, such as carrier a1
  • the dual mode terminal receives the redirect message, searches for the carrier a1 and receives a system message broadcasted by the carrier a, the system message includes a carrier in the CDMA network.
  • the dual-mode terminal After receiving the carrier list, the dual-mode terminal selects a resident carrier according to the hash algorithm, such as carrier a2, and then receives the broadcast system message of the carrier a2, initiates access at the carrier a2, and completes the redirection process.
  • the redirection method provided by the prior art requires the dual mode terminal to receive the broadcast system message of any carrier indicated by the LTE base station, and then select another resident carrier through the hash algorithm, and receive the broadcast system message of the resident carrier again, and update. After the system message is completed, the access can be initiated.
  • the entire process includes two system message updates, which causes the dual-mode terminal to interrupt the upper-layer data service for a long time.
  • the embodiment of the present invention provides a method for redirecting a terminal, where the method includes: a dual-mode terminal receiving a redirect message sent by a long-term evolved LTE base station, where the redirect message includes the LTE base station a dual-mode terminal configured to redirect a target carrier, where the redirected target carrier is a pre-set dual-mode terminal fixed-resident carrier in a CDMA network; the dual-mode terminal performs session negotiation with the CDMA access network, and obtains a knowledge
  • the CDMA access network is a resident carrier designated by the dual mode terminal, and the resident carrier is a carrier that is fixedly camped in the CDMA network by a preset dual mode terminal; the dual mode terminal searches for the CDMA
  • the redirecting target carrier in the network initiates an access procedure on the redirected target carrier.
  • the method for redirecting a terminal includes: Step 301: Setting a carrier of a dual mode terminal fixed in a CDMA EVDO network.
  • the carrier of the dual-mode terminal fixedly camped in the CDMA EVDO network may be preset by the telecommunication operator or the telecommunication equipment vendor. For example: If the CDMA EVDO network deploys three carriers, namely carrier a1, carrier a2, and carrier a3, carrier a2 can be set to be a fixed-mode carrier of the dual-mode terminal in the CDMA EVDO network.
  • Step 302 The dual-mode terminal resides in the LTE network, and the data service is in progress; the dual-mode terminal resides in the LTE network, establishes an air interface connection with the LTE base station, and accesses the IP network to perform data services.
  • Step 304 The dual-mode terminal performs session negotiation with the eAN, and the eAN specifies, by the network management system, the carrier that is fixed in the CDMA EVDO network set in step 301, and the dual-mode terminal is redirected to the resident carrier of the CDMA EVDO network.
  • the dual-mode terminal learns the e-carrier's designated resident carrier during the negotiation with the eAN session.
  • the dual-mode terminal learns that there are multiple ways to relocate the carrier.
  • the eAN can send a session negotiation message to the dual-mode terminal, where the session negotiation message includes the resident carrier specified by the eAN for the dual-mode terminal, and the dual-mode terminal receiving station.
  • the resident carrier is known after the session negotiation message.
  • the eAN may designate the carrier a2 as the dual-mode terminal redirection from the LTE network to the WTRU of the CDMA EVDO network, and the session negotiation message sent by the eAN includes the resident carrier a2 specified by the eAN for the dual-mode terminal.
  • the trigger condition for the session negotiation between the dual mode terminal and the eAN may be specified by the LTE base station, or the session negotiation may be initiated when the dual mode terminal is powered on. Therefore, step 304 may occur before step 303 or after step 305.
  • Step 305 The LTE base station detects that the dual-mode terminal is not suitable for performing data service on the LTE network, and sends a redirect message to the dual-mode terminal, where the redirect message includes a redirect target carrier configured by the LTE base station for the dual-mode terminal;
  • the reason why the modulo terminal is not suitable for the data service in the LTE network is the triggering reason for the dual mode terminal to redirect from the LTE network to the CDMA EVDO network, and the triggering reasons include, but are not limited to: the LTE signal of the dual mode terminal is deteriorated or The LTE network is overloaded.
  • the redirect message sent by the LTE base station to the dual mode terminal includes a redirect target carrier configured by the LTE base station for the dual mode terminal, and the dual mode terminal receives the redirect message.
  • the LTE base station may send a redirect message to the dual mode terminal, and include the redirect target carrier a2 configured by the LTE base station for the dual mode terminal in step 302.
  • Step 306 The dual mode terminal searches for the redirected target carrier in the CDMA EVDO network. After receiving the redirect message sent by the LTE base station and the session negotiation message sent by the eAN, the dual mode terminal searches for the target carrier a2 redirected by the LTE base station to the CDMA EVDO network.
  • Step 307 After the dual mode terminal searches for the target carrier that is redirected to the CDMA EVDO network, it starts to receive the system message.
  • the system message carries the access parameter of the eAN in the CDMA EVDO network, and the dual-mode terminal determines whether to initiate access, how much power to access, at what point in time, etc. according to the received parameter.
  • the dual mode terminal After the dual mode terminal searches for the fixed camped carrier a2 in the CDMA EVDO network, it starts to receive the system message from the carrier a2.
  • Step 308 After receiving the system message, the dual mode terminal initiates an access procedure on the redirected target carrier in the CDMA EVDO network.
  • the eAN accesses the HRPD serving gateway HSGW/packet data gateway PGW to complete the entire redirection process.
  • the embodiment of the present invention further provides a method for redirecting a terminal.
  • the embodiment is substantially the same as the foregoing embodiment, except that the CDMA EVDO network is replaced with a CDMA lx network, and correspondingly, The evolved access network eAN is replaced with a base station subsystem BSS.
  • the redirection method of the terminal provided by the embodiment of the invention reduces the interruption time of the upper layer data service when the dual mode terminal is redirected from the LTE network to the CDMA EVDO network or the CDMA lx network, thereby improving the user experience.
  • the embodiment of the present invention further provides a dual mode terminal.
  • the dual mode terminal includes: a receiving unit, configured to receive a redirect message sent by an LTE base station, where The redirect message includes a redirect target carrier configured by the LTE base station for the dual mode terminal, where the redirect target carrier is a fixed dual-mode terminal carrier that is fixed in the CDMA network; the session negotiation unit uses Performing session negotiation with the CDMA access network, and knowing that the CDMA access network is a resident carrier designated by the dual mode terminal, and the resident carrier is a preset dual mode terminal fixed in the CDMA network.
  • a search unit configured to search for the redirected target carrier in the CDMA network
  • an access unit configured to initiate an access procedure on the redirected target carrier
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a random access memory (RAM) disk, or an optical disk, and the like, which can store program codes.

Abstract

本发明提供的该终端的重定向方法,首先预先设置双模终端在CDMA网络中固定驻留的载波,然后由LTE基站向双模终端发送重定向消息,该重定向消息中包含LTE基站配置的重定向目标载波,双模终端与CDMA接入网进行会话协商,并获知该CDMA接入网指定的驻留载波,并且所述重定向目标载波和所述驻留载波均为预先设置的双模终端在CDMA网络中固定驻留的载波;当双模终端从LTE网络重定向到CDMA网络时,搜索CDMA网络中的重定向目标载波,在所述CDMA网络中的重定向目标载波上发起接入过程。与现有技术相比,本发明提供的技术方案减少了双模终端从LTE网络重定向到CDMA网络时的业务中断时间,提高了用户的感受。

Description

一种终端的重定向方法及装置 技术领域 本发明涉及通信技术领域, 特别涉及一种终端的重定向方法及装置。 背景技术 目前, 现有的 CDMA (Code Division Multiple Access 码分多址) 运营商倾向于后 续选择 LTE (Long Term Evolution, 长期演进) 技术作为下一代网络, 以满足日益增长 的无线数据业务需求。 由于 LTE的部署不可能一次性到位, 因此运营商初期一般会将 LTE部署在热点地区, 然后在逐渐扩大部署范围。 这种部署方式如图 1所示, 运营商现 有的 CDMA EVDO ( Code Division Multiple Access Evolution Data Only, 码分多址演进 数据) 网络覆盖范围很大, 为广覆盖。 在热点地区部署的 LTE网络相对于在热点地区 部署的 LTE网络叠加到 EVDO上, 形成 EVDO和 LTE的重叠覆盖区。此时, 当位于该 重叠覆盖区的双模终端不适合在 LTE网络进行数据业务时, 如 LTE信号变差、 LTE负 载过重等,该双模终端就需要从 LTE网络重定向到 CDMA EVDO网络中,如图 2所示, 双模终端从 LTE网络移动到 CDMA EVDO网络的组网如下:
1 ) EVDO网络的实体
eAN ( evolved Access Network, 演进接入网) : 为终端提供 EVDO的空口无线接入 功能。
2) LTE网络实体
eNB ( evolved Node B, 演进型节点基站) : 为终端提供 LTE的空口无线接入功能。
3 ) 核心网实体
HSGW (HRPD Serving Gateway, HRPD服务网关) : 为若干个 eAN提供业务面数 据网关汇聚功能, 并且为终端提供 PPP拨号连接功能。
S-GW ( Serving Gateway, 服务网关): 为若干个 eNodeB提供业务面数据网关汇聚 功能。
PGW (Packet Gateway, 包数据网关) : IP包数据网关, 支持 EVDO和 LTE网络 的接入, 负责为终端分配 IP地址, 并且负责将终端接入到 IP网络, 以便终端进行数据 业务。
但现有技术中的重定向方法会使该双模终端在重定向的过程中, 中断该终端上层数 据业务一段时间, 造成用户感受较差。 发明内容
本发明实施例提供了一种终端的重定向方法, 以实现减少双模终端在重定向的过程 中的业务中断时间。
为实现上述目的, 本发明一方面提供了一种终端的重定向方法, 包括:
双模终端接收 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE基站为 所述双模终端配置的重定向目标载波, 所述重定向目标载波为预先设置的双模终端在 CDMA网络中固定驻留的载波;
所述双模终端与 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为所述双模 终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络中固定驻 留的载波;
所述双模终端搜索所述 CDMA网络中的所述重定向目标载波,在所述重定向目标载 波上发起接入过程。
本发明另一方面还提供了一种双模终端, 包括:
接收单元, 用于接收 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE 基站为所述双模终端配置的重定向目标载波,所述重定向目标载波为预先设置的双模终 端在 CDMA网络中固定驻留的载波;
会话协商单元, 用于与 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为所 述双模终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络中 固定驻留的载波;
搜索单元, 用于搜索所述 CDMA网络中的所述重定向目标载波;
接入单元, 用于在所述重定向目标载波上发起接入过程。
本发明提供的该终端的重定向方法, 首先预先设置双模终端在 CDMA网络中固定驻 留的载波, 然后由 LTE基站向双模终端发送重定向消息, 该重定向消息中包含 LTE基站 配置的重定向目标载波, 双模终端与 CDMA接入网进行会话协商, 并获知该 CDMA接入 网为所述双模终端指定的驻留载波, 并且所述重定向目标载波和所述驻留载波均为预先 设置的双模终端在 CDMA网络中固定驻留的载波; 当双模终端从 LTE网络重定向到 CDMA网络时, 搜索 CDMA网络中的重定向目标载波, 在所述 CDMA网络中的重定向目 标载波上发起接入过程。与现有技术相比,本发明提供的技术方案减少了双模终端从 LTE 网络重定向到 CDMA网络时的业务中断时间, 提高了用户的感受。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明中记载的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提 下, 还可以根据这些附图获得其他的附图。
图 1为背景技术中 CDAM EVDO网络和 LTE网络的空口组网图;
图 2为背景技术中双模终端从 LTE网络移动到 CDMA EVDO网络的组网图; 图 3为本发明实施例提供的一种终端的重定向方法流程图;
图 4为本发明实施例提供的一种终端的重定向方法流程图;
图 5为本发明实施例提供的一种双模终端结构图。 具体实施方式 为了使本技术领域的人员更好地理解本发明中的技术方案, 下面将结合本发明实施 例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实 施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领 域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例, 都应当属于本 发明保护的范围。 本文中术语 "系统"和 "网络"在本文中常被可互换使用。 本文中术语 "和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种关系, 例如, A和 /或 可以 表示: 单独存在 A, 同时存在 和 单独存在 B这三种情况。 另外, 本文中字符 "/", 一般表示前后关联对象是一种 "或" 的关系。 目前双模终端从 LTE网络重定向到 CDMA网络的方法为: 当双模终端要从 LTE网络 重定向到 CDMA网络时, LTE基站向双模终端发送重定向消息, 该重定向消息中指示该 双模终端重定向到 CDMA网络的某个载波, 如载波 al, 双模终端收到该重定向消息, 搜 索该载波 al并接收该载波 al广播的系统消息, 该系统消息中包含 CDMA网络中的载波列 表。 双模终端收到该载波列表后, 根据哈希算法选择一个驻留载波, 如载波 a2, 然后接 收该载波 a2的广播系统消息, 在该载波 a2发起接入, 完成重定向过程。 现有技术提供的重定向方法需要双模终端在接收 LTE基站指示的任意载波的广播系 统消息后,再通过哈希算法选择另一个驻留载波,再次接收该驻留载波的广播系统消息, 更新完系统消息后才能发起接入, 整个过程包含了 2次系统消息更新, 导致双模终端需 要中断较长时间的上层数据业务。 本发明实施例针对上述缺陷提出了一种终端的重定向方法, 该方法主要包括: 双模终端接收长期演进 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE基站为所述双模终端配置的重定向目标载波, 所述重定向目标载波为预先设置的双 模终端在 CDMA网络中固定驻留的载波; 所述双模终端与 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为所述双模 终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络中固定驻 留的载波; 所述双模终端搜索所述 CDMA网络中的所述重定向目标载波,在所述重定向目标载 波上发起接入过程。 以下参考附图以及具体实施方式对本发明做进一步说明: 如图 3所示, 本发明实施例提供的终端的重定向方法包括: 步骤 301: 设置双模终端在 CDMA EVDO网络中固定驻留的载波; 本步骤中, 可以由电信运营商或者电信设备商来预先设定双模终端在 CDMA EVDO 网络中固定驻留的载波。 例如: 如果 CDMA EVDO网络部署了 3个载波, 分别为载波 al、 载波 a2、 载波 a3, 可以设定载波 a2为双模终端在 CDMA EVDO网络中固定驻留的载波。 步骤 302: 双模终端驻留在 LTE网络, 并且正在进行数据业务; 双模终端驻留在 LTE网络, 和 LTE基站建立空口连接, 接入到 IP网络, 进行数据业 务。 步骤 303: LTE基站通过网络管理系统, 将步骤 301中设置的在 CDMA EVDO网络中 固定驻留的载波, 配置为双模终端重定向到 CDMA EVDO网络的目标载波; 例如 LTE基站可以将载波 a2配置为双模终端重定向到 CDMA EVDO网络的目标载 波。
步骤 304: 双模终端与 eAN进行会话协商, eAN通过网络管理系统, 将步骤 301中设 置的在 CDMA EVDO网络中固定驻留的载波, 指定为双模终端重定向到 CDMA EVDO网 络的驻留载波; 所述双模终端在与 eAN会话协商的过程中获知 eAN为其指定的驻留载波。 双模终端 获知该驻留载波的方式有多种, 例如 eAN可以发送会话协商消息给双模终端, 所述会话 协商消息中包含 eAN为该双模终端指定的驻留载波, 双模终端接收所述会话协商消息后 即获知该驻留载波。 本实施例中 eAN可以将载波 a2指定为双模终端从 LTE网络重定向到 CDMA EVDO网 络的驻留载波,并且 eAN发送的会话协商消息中包含 eAN为双模终端指定的驻留载波 a2。 双模终端与 eAN进行会话协商的触发条件可以由 LTE基站指定, 也可以在双模终端 开机时就发起会话协商, 因此步骤 304可以发生在步骤 303之前, 也可以发生在步骤 305 之后。
步骤 305: LTE基站检测到双模终端不适合在 LTE网络进行数据业务时, 向该双模终 端发送重定向消息, 该重定向消息中包含 LTE基站为双模终端配置的重定向目标载波; 双模终端不适合在 LTE网络进行数据业务是该双模终端从 LTE网络重定向到所述 CDMA EVDO网络的触发原因, 该触发原因包括但不限于: 所述双模终端的 LTE信号变差或者所述 LTE网络负荷过重。
LTE基站向该双模终端发送的重定向消息中包含 LTE基站为双模终端配置的重定向 目标载波, 双模终端接收该重定向消息。 本实施例中, LTE基站可以向双模终端发送重定向消息, 并包含 LTE基站在步骤 302 中为双模终端配置的重定向目标载波 a2。 步骤 306: 双模终端搜索 CDMA EVDO网络中的所述重定向目标载波。 双模终端接收到 LTE基站发送的重定向消息和 eAN发送的会话协商消息后, 搜索 LTE基站为其配置的重定向到 CDMA EVDO网络的目标载波 a2。 步骤 307: 双模终端搜索到重定向到 CDMA EVDO网络的目标载波后, 开始接收系 统消息。 该系统消息携带有所述 CDMA EVDO网络中所述 eAN的接入参数, 双模终端根据接 收的该参数决定是否发起接入、 以多大的功率接入、 在什么时间点接入等。 本实施例中, 双模终端搜索到 CDMA EVDO网络中的固定驻留载波 a2后, 开始从载 波 a2接收系统消息。 步骤 308: 双模终端接收完系统消息后, 在 CDMA EVDO网络中的重定向目标载波 上发起接入过程。 本实施例中, 双模终端在 CDMA EVDO网络中的重定向目标载波 a2上发起接入过程 时, 通过 eAN接入到 HRPD服务网关 HSGW/包数据网关 PGW, 完成整个重定向过程。
本发明实施例还提供了一种终端的重定向方法, 如图 4所示, 本实施方式与上述实 施方式大致相同,其区别在于,将所述 CDMA EVDO网络替换为 CDMA lx网络,相应的, 将演进接入网 eAN替换为基站子系统 BSS。 本发明实施例提供的该终端的重定向方法, 减少了双模终端从 LTE网络重定向到 CDMA EVDO网络或 CDMA lx网络时的上层数据业务的中断时间, 提高了用户的感受。
在上述方法实施例的基础上, 本发明实施例还提供了一种双模终端, 如图 5所示, 该双模终端包括: 接收单元, 用于接收 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE 基站为所述双模终端配置的重定向目标载波,所述重定向目标载波为预先设置的双模终 端在 CDMA网络中固定驻留的载波; 会话协商单元, 用于与 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为所 述双模终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络中 固定驻留的载波; 搜索单元, 用于搜索所述 CDMA网络中的所述重定向目标载波; 接入单元, 用于在所述重定向目标载波上发起接入过程。 所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描述的系统, 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。 在本发明所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和方法, 可以 通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性的, 例如, 所述单 元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式, 例如多个单 元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一 点, 所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置 或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。 所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示 的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个 网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的 目的。 另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是 各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单元中。 上述集成的单 元既可以采用硬件的形式实现, 也可以采用软件功能单元的形式实现。 所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上 或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形 式体现出来, 该计算机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计 算机设备 (可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述 方法的全部或部分。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (ROM, Read-Only Memory) 随机存取存储器 (RAM, Random Access Memory ) 磁碟或者光 盘等各种可以存储程序代码的介质。 以上所述仅是本发明的优选实施方式, 使本领域技术人员能够理解或实现本发明。 对这些实施例的多种修改对本领域的技术人员来说将是显而易见的,本文中所定义的一 般原理可以在不脱离本发明的精神或范围的情况下, 在其它实施例中实现。 因此, 本发 明将不会被限制于本文所示的这些实施例, 而是要符合与本文所公开的原理和新颖特点 相一致的最宽的范围。

Claims

权利要求书
1、 一种终端的重定向方法, 其特征在于, 包括:
双模终端接收长期演进 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE基站为所述双模终端配置的重定向目标载波, 所述重定向目标载波为预先设置的双 模终端在 CDMA网络中固定驻留的载波;
所述双模终端与码分多址 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为 所述双模终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络 中固定驻留的载波;
所述双模终端搜索所述 CDMA网络中的所述重定向目标载波,在所述重定向目标载 波上发起接入过程。
2、 如权利要求 1所述的方法, 其特征在于, 所述 CDMA网络为 CDMA EVDO网络或 CDMA lx网络。
3、 如权利要求 1所述的方法, 其特征在于, 该方法之前进一步包括: 所述 LTE基站 通过网络管理系统为所述双模终端配置所述重定向目标载波。
4、 如权利要求 1所述的方法, 其特征在于, 该方法之前进一步包括: 所述 CDMA接 入网通过网络管理系统为所述双模终端指定所述驻留载波。
5、 如权利要求 1所述的方法, 其特征在于, 该方法之前进一步包括:
所述 LTE基站检测到所述双模终端不适合在 LTE网络进行数据业务后, 向所述双模 终端发送重定向消息。
6、 如权利要求 5所述的方法, 其特征在于, 所述 LTE基站检测到所述双模终端不适 合在 LTE网络进行数据业务, 具体为:
所述 LTE基站检测到所述双模终端的 LTE信号变差或者所述 LTE网络负荷过重。
7、 如权利要求 1所述的方法, 其特征在于, 所述双模终端搜索到所述 CDMA网络中 的所述重定向目标载波后, 进一步包括以下步骤:
所述双模终端接收系统消息, 接收完系统消息后, 在所述重定向目标载波上发起接 入过程。
8、 一种双模终端, 其特征在于, 包括: 接收单元, 用于接收 LTE基站发送的重定向消息, 所述重定向消息中包含所述 LTE 基站为所述双模终端配置的重定向目标载波,所述重定向目标载波为预先设置的双模终 端在 CDMA网络中固定驻留的载波;
会话协商单元, 用于与 CDMA接入网进行会话协商, 并获知所述 CDMA接入网为所 述双模终端指定的驻留载波,所述驻留载波为预先设置的双模终端在所述 CDMA网络中 固定驻留的载波;
搜索单元, 用于搜索所述 CDMA网络中的所述重定向目标载波;
接入单元, 用于在所述重定向目标载波上发起接入过程。
9、 如权利要求 8所述的双模终端, 其特征在于, 所述 CDMA网络为 CDMA EVDO网 络或 CDMA lx网络。
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