WO2011088802A1 - 一种实现异系统间呼叫控制的方法、装置和系统 - Google Patents

一种实现异系统间呼叫控制的方法、装置和系统 Download PDF

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Publication number
WO2011088802A1
WO2011088802A1 PCT/CN2011/070509 CN2011070509W WO2011088802A1 WO 2011088802 A1 WO2011088802 A1 WO 2011088802A1 CN 2011070509 W CN2011070509 W CN 2011070509W WO 2011088802 A1 WO2011088802 A1 WO 2011088802A1
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msc
receiving
message
paging
called
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PCT/CN2011/070509
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English (en)
French (fr)
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夏共仪
许明霞
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华为技术有限公司
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Publication of WO2011088802A1 publication Critical patent/WO2011088802A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/12Inter-network notification

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method, device and system for implementing call control between different systems. Background technique
  • HDR High Data Rate
  • LTE Long Term Evolution
  • HRPD High Rate Packet Data
  • EV-DO lx EV-DO
  • both EV-DO and LTE support only data services, that is, only the packet domain has no circuit domain
  • the methods commonly used to implement voice calls for terminals supporting LTE or EV-DO networks are as follows: 1. Adopting packet-based The VoIP service in the domain, that is, the voice data is transmitted in the packet domain; 2.
  • the dual-mode or multi-mode terminal that supports both the circuit domain service and the packet domain service is used, and the LTE or EV-DO network bearer is used for the data service, and the voice service is used.
  • the network is supported by a network supporting the circuit domain service, for example, using a CDMA (Code Division Multiple Access) 2000 lx (referred to as IX) network.
  • IX Code Division Multiple Access 2000 lx
  • the second method can provide data and voice services well, when the terminal camps on LTE or EV-DO, if there is a voice call to call the user, how to transmit the paging information to the terminal becomes a necessity.
  • the problem is solved; for this problem, the current commonly used method is solved by cross-paging, that is, if the terminal works on the LTE network, if there is a voice call, the paging information will be sent to the terminal through the LTE packet data network. So that the terminal can switch to the IX network for voice service; if the terminal works on the EV-DO network, the situation is similar.
  • the paging response message is returned only after the user selects to answer, and the release order (Release Order) is sent when the user refuses to answer; but MSC (Mobile Switching Center, mobile)
  • MSC Mobile Switching Center, mobile
  • the switching center starts the timer after the paging message is sent, and the terminal responds to the paging response only after the user selects the answer, so that the MSC cannot receive the paging response within the time specified by the timer. Therefore, it is determined that the terminal is not in its service area, which seriously affects the communication quality and causes unnecessary communication interruption; further, since the called terminal receives the paging message, it decides to send the paging response message according to the user's selection.
  • Embodiments of the present invention provide a method, apparatus, and system for implementing inter-system call control, which can avoid an erroneous decision in an out of service area caused by an MSC not receiving a paging response in time, and can also make a caller The party normally hears the ringback tone.
  • a method for implementing inter-system call control includes: receiving a first paging message sent by a mobile switching center MSC, and using the data network to the called terminal Sending a second paging message; receiving a first paging response returned by the called terminal after receiving the second paging message, sending a second paging response to the MSC; receiving the second paging by the MSC After responding to the resource allocation request message sent, returning a resource allocation complete message to the MSC; returning an answer or reject the answer message to the MSC according to the selected user, and when the called user selects to answer, the indication is The terminal is called to switch to the voice network and assign the corresponding traffic channel.
  • An apparatus for implementing inter-system call control comprising: a first processing unit, a second processing unit, a third processing unit, and a fourth processing unit; wherein the first processing unit is configured to receive the MSC to send After the first paging message, sending a second paging message to the called terminal through the data network;
  • the second processing unit is configured to receive a first paging response returned by the called terminal after receiving the second paging message, and send a second paging response to the MSC;
  • the third processing unit is configured to receive After receiving the resource allocation request message sent after the second paging response, the MSC returns a resource allocation complete message to the MSC;
  • the fourth processing unit is configured to return an answer or reject the answer message to the MSC according to the selected user, and after the called user selects to answer, instruct the called terminal to switch to the voice network, and assign the corresponding Traffic channel.
  • a terminal comprising: a receiving unit, a sending unit, and a switching unit; wherein the receiving unit is configured to receive a paging message and a handover command, and notify the sending unit or the switching unit; The notification of the receiving unit sends a paging response, and sends a receiving message when the user selects to answer the voice call; the switching unit is configured to switch the terminal to the voice network according to the switching command notified by the receiving unit.
  • a system for implementing inter-system call control comprising a mobile switching center MSC, the system further comprising: an interoperation module and a mobile terminal; wherein the MSC is configured to send a first paging message to the interoperation module, and After receiving the second paging response returned by the interoperation module, sending a resource allocation request to the interoperation module, and then receiving a resource allocation completion message returned by the interoperation module; the interoperation module is used to After receiving the first paging message, sending a second paging message to the called mobile terminal through the data network, receiving a first paging response returned by the called mobile terminal, and sending a second paging response to the MSC, and Returning the resource allocation completion message after receiving the resource allocation request, and then returning the answering or rejecting the answering message to the MSC according to the selected user, and after the called user selects to answer, instructing the called terminal to switch to a voice network, and assigning a corresponding traffic channel; the called mobile terminal is configured to return a first paging response after receiving the second
  • the MSC can be avoided. If the paging response is not received in time, the erroneous decision is not in the service area, which improves the communication efficiency of the voice call; and at the same time, because the paging response is returned in time, the MSC can return the ring back tone to the calling party in time. , which further enhances the user experience; In addition, through the information exchange between the IWS and the MSC regarding resource allocation, it is also possible to make no changes to existing processes and systems, thereby achieving better compatibility with existing systems and processes.
  • FIG. 1 is a schematic flowchart of a method for implementing inter-system call control according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of a method for implementing a hard handover procedure in a method for implementing inter-system call control according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flow chart of another method for implementing a hard handover procedure in a method for implementing inter-system call control according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for implementing inter-system call control according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 3 of the present invention.
  • the embodiment 1 of the present invention provides a method for implementing inter-system call control.
  • the terminal involved in the method in this embodiment resides in a data network, such as LTE or EV-DO, but is not limited thereto;
  • the terminal has been pre-registered in the circuit domain of the lx through the IWS (interoperation module), and the terminal can be in the connected state or the idle state; as shown in FIG.
  • Step 101 The MSC receives the calling user After the initiated voice call, it is determined whether the called user terminal of the voice call is in its service area, and if so, the paging message is sent to the IWS where the called user terminal is located, and the MSC starts a timer; If the MSC still does not receive the paging response before the timer expires, the MSC determines that the called user is not in the service area, thus making a decision that the called user cannot page; and further, the MSC When sending a paging message to the IWS, the calling number may also be sent to the IWS; of course, in order to improve the success rate of paging, the MSC sends the IWS to the IWS. When paging a message, the paging message can also be sent to the lx BS at the same time;
  • Step 102 After receiving the paging message sent by the MSC, the IWS sends a paging message to the called terminal through the data network. In addition, if the paging message is received, the IWS is also received. Receiving the calling number sent by the MSC, when the IWS sends a paging message to the called terminal, sending the calling number to the called terminal together with the paging message.
  • Step 103 After receiving the paging message sent by the IWS, the called terminal sends a paging response (Paging Response) message to the IWS regardless of whether the user selects to answer the call; Receiving the calling number and receiving the calling number, the called terminal starts ringing, prompting the user to have an incoming call and displaying the calling number; Step 104: The IWS returns after receiving the terminal After the paging response message, the paging response is sent to the MSC; Step 105: After receiving the paging response sent by the IWS, the MSC stops the timer and sends an allocation request ( Assignment Request) to the IWS.
  • Paging Response paging response
  • the message is configured to allocate a corresponding resource for the voice call; in addition, after receiving the paging response, the MSC may return a ring back tone to the calling party, indicating that the called user has been paged; step 1 06: After receiving the allocation request message, the IWS directly returns an Assignment Complete message to the MSC. In addition, after receiving the allocation request message, the IWS may further report to the The calling terminal sends a ringing message carrying the calling number; Step 107: If the MSC does not return a ring back tone to the calling party after receiving the paging response, the terminal may send the calling completion message to the calling party.
  • the party returns a ringback tone, which indicates that the called user has been paged; it is worth noting that in the existing call procedure, the MSC usually sends an Assignment Request message to the 1XBS to request to allocate a corresponding resource for the call.
  • the 1XBS establishes a traffic channel with the terminal, the 1XBS returns an Assignment Complete message to the MSC.
  • the MSC receives the paging response. Is to send an Assignment Request to the IWS to request to allocate a corresponding resource for the voice call, and the IWS directly sends the MSC to the MSC after receiving the allocation request message.
  • Step 108 If the called user chooses to answer the voice call, the called terminal returns an answer message to the IWS; if the called user rejects the voice call, the called terminal returns a reject message to the IWS; Step 109: After receiving the answer message of the called terminal, the IWS returns an answer message to the MSC; when the IWS receives the reject message of the called terminal, returns to the MSC Rejecting the message; Step 110: After receiving the answering message sent by the called terminal, the IWS sends a handover command to the called terminal, instructing the called terminal to switch to the lx air interface, and assigning a corresponding traffic channel; As shown in FIG.
  • the foregoing method may further include: Step 111: After the IWS returns an allocation complete message to the MSC or after receiving the answer message sent by the called terminal, The called terminal applies for a voice call service channel resource.
  • the requesting the called terminal to apply for a voice call service channel resource includes but is not limited to: the IWS initiates a hard handover procedure between the base station controller (BSC), or When the IWS and the lxBS are in the same device, the service channel resources are directly allocated by the lxBS where the IWS is located.
  • BSC base station controller
  • the specific hard handover process may include but is not limited to:
  • the MSC After receiving the handover request sent by the IWS, the MSC sends a handover request to the 1XBS.
  • the MSC sends a handover command to the IWS after receiving the handover request acknowledgement.
  • the IWS may also send a handover start message to the MSC, and the voice call process is completed.
  • the embodiment 2 of the present invention further provides a device for implementing inter-system call control.
  • the device 400 includes: a first processing unit 401, a second processing unit 402, a third processing unit 403 and a fourth processing unit 404.
  • the first processing unit 401 is configured to send a second paging message to the called terminal through the data network after receiving the first paging message sent by the MSC.
  • the second processing unit 402 is configured to receive a first paging response returned by the called terminal after receiving the second paging message, and send a second paging response to the MSC, where the third processing unit 403 uses After receiving the resource allocation request message sent by the MSC after receiving the second paging response, returning a resource allocation complete message to the MSC;
  • the fourth processing unit 404 is configured to return to the MSC to answer or reject the answer message according to the selected user, and after the called user selects to answer, instruct the called terminal to switch to the voice network, and assign the corresponding Business channel.
  • the apparatus may further include: a fifth processing unit 405, configured to apply for a voice for the called terminal after the third processing unit returns a resource allocation complete message to the MSC or after the called user selects to answer the call Call traffic channel resources.
  • the fifth processing unit may further include: a sending module and receiving The module is configured to send a handover request to the MSC; the receiving module is configured to receive a handover command returned by the MSC, where the handover command is: the MSC sends a handover request to the base station. Returned after the base station confirms that the corresponding call is allocated for the current call.
  • the embodiment 3 of the present invention further provides a terminal.
  • the terminal 500 includes: a receiving unit 501, a sending unit 502, and a switching unit 503.
  • the receiving unit 501 is configured to receive a paging message. And switching the command, and notifying the sending unit 502 or the switching unit 503;
  • the sending unit 502 is configured to send a paging response according to the notification of the receiving unit 501, and send an answering message when the user selects to answer the voice call;
  • the switching unit 503 is configured to switch the terminal to a voice network according to a handover command notified by the receiving unit 501. It should be noted that those skilled in the art can easily understand that the apparatus and terminal for implementing inter-system call control described in the above embodiments can also exist as part of the system, and in the system. Performing information interaction with the MSC to implement the functions consistent with the description in the foregoing embodiments, and therefore, a system including the apparatus for implementing inter-system call control and the mobile terminal in the foregoing embodiment should also be included in the protection scope of the present application. I will not repeat them here.
  • the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

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  • Computer Networks & Wireless Communication (AREA)
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Description

一种实现异系统间呼叫控制的方法、 装置和系统
技术领域
本发明涉及移动通信技术领域, 尤其涉及一种实现异系统间呼叫控制的 方法、 装置和系统。 背景技术
目前, 随着移动通信技术的迅猛发展, 高数据速率 ( High Data Rate, HDR )技术和长期演进 ( Long Term Evolution, LTE )技术日趋成熟; 其中, HDR技术又可称为高速率分组数据 ( High Rate Packet Data, HRPD )或 lx EV-DO,, 而 lx EV-DO已被接受为 3G技术标准之一, 以下称为 EV-DO。 但 由于 EV-DO和 LTE都是只支持数据业务, 即只有分组域没有电路域, 因而 对于支持 LTE或者 EV-DO网络的终端, 若要实现语音呼叫通常采用的方法 是: 一、 采用基于分组域的 VoIP业务, 即语音数据走分组域传送; 二、 采 用既支持电路域业务、 也支持分组域业务的双模或者多模终端, 对于数据业 务使用 LTE或者 EV-DO网络承载, 对于语音业务则使用支持电路域业务的 网络来承载, 例如使用 CDMA ( Code Division Multiple Access, 码分多址 ) 2000 lx (简称 IX ) 网络 载。 虽然采用第二种方式能够很好的提供数据和语音业务, 但是当终端驻留 在 LTE或者 EV-DO时, 若有语音通话呼叫该用户, 则如何将寻呼信息传递 给终端即成为一个必须解决的问题; 而针对该问题, 目前普遍采用的是通过 交叉寻呼的方式解决, 即若终端工作在 LTE网络上时, 若有语音来电, 则寻 呼信息将通过 LTE分组数据网络发给终端, 以使终端切换到 IX网络上进行 语音业务; 若终端工作在 EV-DO网络上时情况也类似。 然而, 在目前此种交叉寻呼的过程中, 只有在用户选择接听后才会返回 寻呼响应消息, 而在用户拒绝接听时则发送释放命令( Release Order ); 但 MSC ( Mobile Switching Center, 移动交换中心)在发出寻呼消息后会启动定 时器, 而由于终端只有在用户选择接听后才回复寻呼响应, 使得所述 MSC 在所述定时器规定的时间内因无法接收到所述寻呼响应, 从而判决出该终端 不在其服务区域内,严重影响了通信质量,造成了不必要的通信中断; 此外, 由于被叫终端在收到寻呼消息后根据用户的选择来决定发送寻呼响应消息 或者释放命令, 而 MSC在发出寻呼消息并启动定时器后不会向主叫返回回 铃音, 只有收到寻呼响应消息或者释放命令后, 才执行接听或者拒听操作, 因而不论被叫用户接听与否, 在寻呼到被叫用户后, 主叫用户都不会收到回 铃音, 从而也严重影响了用户感受。 发明内容 本发明实施例提供一种实现异系统间呼叫控制的方法、 装置和系统, 能 够避免因 MSC没有及时收到寻呼响应而做出的不在服务区的错误判决, 同 时也能使主叫方正常听到回铃音。 为解决上述问题, 本发明实施例提供的技术方案如下: 一种实现异系统间呼叫控制的方法, 该方法包括: 接收移动交换中心 MSC发送的第一寻呼消息, 通过数据网络向被叫终 端发送第二寻呼消息; 接收被叫终端在收到所述第二寻呼消息后返回的第一寻呼响应,向 MSC 发送第二寻呼响应; 接收所述 MSC在收到第二寻呼响应后发送的资源分配请求消息后, 向 所述 MSC返回资源分配完成消息; 根据被叫用户的选择向所述 MSC返回接听或拒绝接听消息, 并当所述 被叫用户选择接听后, 指示被叫终端切换到语音网络, 并指配相应的业务信 道。
一种实现异系统间呼叫控制的装置, 该装置包括: 第一处理单元、 第二 处理单元、 第三处理单元和第四处理单元; 其中, 所述第一处理单元用于接收所述 MSC发送的第一寻呼消息后, 通过数 据网络向被叫终端发送第二寻呼消息;
所述第二处理单元用于接收被叫终端在收到所述第二寻呼消息后返回 的第一寻呼响应, 并向 MSC发送第二寻呼响应; 所述第三处理单元用于接收所述 MSC在收到第二寻呼响应后发送的资 源分配请求消息后, 向所述 MSC返回资源分配完成消息; 所述第四处理单元用于根据被叫用户的选择向所述 MSC返回接听或拒 绝接听消息,并当所述被叫用户选择接听后,指示被叫终端切换到语音网络, 并指配相应的业务信道。 一种终端, 包括: 接收单元、 发送单元和切换单元; 其中, 所述接收单 元用于接收寻呼消息和切换命令, 并通知所述发送单元或切换单元; 所述发送单元用于根据所述接收单元的通知发送寻呼响应, 并在用户选 择接听语音呼叫时发送接听消息; 所述切换单元用于根据所述接收单元通知的切换命令, 将所述终端切换 到语音网络。 一种实现异系统间呼叫控制的系统, 包括移动交换中心 MSC,该系统还 包括: 互操作模块和移动终端; 其中, 所述 MSC用于向所述互操作模块发送第一寻呼消息, 并在接收到所述 互操作模块返回的第二寻呼响应后, 向所述互操作模块发送资源分配请求, 然后接收所述互操作模块返回的资源分配完成消息; 所述互操作模块用于在接收所述第一寻呼消息后, 通过数据网络向被叫 移动终端发送第二寻呼消息, 接收所述被叫移动终端返回的第一寻呼响应后 向 MSC发送第二寻呼响应, 并在接收到所述资源分配请求后返回资源分配 完成消息, 然后根据被叫用户的选择向所述 MSC返回接听或拒绝接听消息, 并当所述被叫用户选择接听后, 指示被叫终端切换到语音网络, 并指配相应 的业务信道; 所述被叫移动终端用于接收到第二寻呼消息后返回第一寻呼响应, 并根 据被叫用户的选择向所述互操作模块返回接听或拒绝接听消息, 根据所述互 操作模块的切换命令切换到语音网络。 可以看出, 采用本发明实施例的方法、 装置和系统, 通过寻呼到位于数 据网络的被叫终端后, 不论所述被叫用户是否选择接听都向 MSC返回寻呼 响应, 能够避免因 MSC没有及时收到寻呼响应而做出的不在服务区的错误 判决, 提高了语音呼叫的通信效率; 同时由于及时的返回了寻呼响应, 使得 所述 MSC可以及时向主叫方返回回铃音, 从而也进一步提高了用户感受; 此外, 通过 IWS与 MSC之间有关资源分配的信息交互, 也可以不对现有流 程和系统做出改动, 从而实现了与现有系统和流程更好的兼容性。 附图说明 图 1是本发明实施例 1实现异系统间呼叫控制的方法流程示意图; 图 2是本发明实施例 1实现异系统间呼叫控制的方法中包含硬切换流程 的方法流程示意图;
图 3是本发明实施例 1实现异系统间呼叫控制的方法中包含硬切换流程 的另一方法流程示意图;
图 4是本发明实施例 2实现异系统间呼叫控制的装置结构示意图; 图 5是本发明实施例 3的终端结构示意图。
具体实施方式 为了便于本领域技术人员更好的理解, 下面结合附图和具体实施例进行 详细说明。 本发明实施例 1提供了一种实现异系统间呼叫控制的方法, 本实施例的 方法中涉及的终端驻留在数据网络下, 例如 LTE或者 EV-DO等, 但并不局 限于此; 并且所述终端已通过 IWS (互操作模块)在 lx的电路域预注册成 功, 且该终端可以处于连接态或者空闲态下; 如图 1所示, 该方法包括: 步骤 101 : MSC接收主叫用户发起的语音呼叫后, 判断所述语音呼叫的 被叫用户终端是否在其服务区域内, 如果是, 则将寻呼消息发往该被叫用户 终端所在的 IWS, 同时 MSC启动定时器; 其中, 如果所述 MSC在所述定时 器超时前仍没有收到寻呼响应, 则该 MSC确定所述被叫用户不在服务区, 因此做出被叫用户无法寻呼到的判决; 此外, 所述 MSC向所述 IWS发送寻呼消息时, 同时还可以将所述主叫 号码发往 IWS; 当然, 为了提高寻呼的成功率, 在所述 MSC向所述 IWS发 送寻呼消息时, 同时还可以向 lx BS发送寻呼消息;
步骤 102: 所述 IWS接收到所述 MSC发送的寻呼消息后, 通过数据网 络向被叫终端发送寻呼消息; 此外, 如果在接收到所述寻呼消息的同时也接 收到所述 MSC发送的所述主叫号码, 则所述 IWS在向所述被叫终端发送寻 呼消息时, 将该主叫号码与所述寻呼消息一并发送给所述被叫终端; 步骤 103: 所述被叫终端在接收到所述 IWS发送的寻呼消息后, 不论用 户是否选择接听, 都向所述 IWS发送寻呼响应( Paging Response )消息; 此 外, 所述被叫终端在接收到所述寻呼消息的同时也接收到所述主叫号码, 则 所述被叫终端开始振铃, 提示用户有来电并显示主叫号码; 步骤 104:所述 IWS在接收到终端返回的寻呼响应消息后,向所述 MSC 发送寻呼响应; 步骤 105: 所述 MSC接收到所述 IWS发送的寻呼响应后, 停止定时器, 同时向所述 IWS发送分配请求( Assignment Request ) 消息, 以请求为此次 语音呼叫分配相应的资源; 此外, 所述 MSC在接收到所述寻呼响应后, 可 以向主叫方返回回铃音, 表明已寻呼到所述被叫用户; 步骤 106: 所述 IWS在接收到所述分配请求消息后, 直接向所述 MSC 返回分配完成(Assignment Complete )消息; 此外, 所述 IWS在接收到所述 分配请求消息后, 还可以向所述被叫终端发送携带主叫号码的振铃消息; 步骤 107: 如果所述 MSC在接收到寻呼响应后没有向主叫方返回回铃 音, 则可以在接收到所述分配完成消息后向主叫方返回回铃音, 已表明已寻 呼到被叫用户; 值得注意的是, 在现有呼叫流程中, 所述 MSC通常向所述 1XBS发送 Assignment Request 消息, 以请求为呼叫分配相应的资源, 而当所述 1XBS 在与终端建立业务信道后, 所述 1XBS 才会向所述 MSC 返回分配完成 ( Assignment Complete ) 消息; 而在本发明实施例中, 所述 MSC在接收到 寻呼响应后, 是向所述 IWS发送 Assignment Request, 以请求为此次语音呼 叫分配相应的资源, 而所述 IWS 在收到所述分配请求消息后, 直接向所述 MSC返回分配完成消息; 通过本实施例的此种方式,可以不对现有流程和系 统做出改动, 从而实现了与现有系统和流程更好的兼容性。 步骤 108:如果被叫用户选择接听此次语音呼叫,则被叫终端向所述 IWS 返回接听消息; 如果被叫用户拒绝此次语音呼叫, 则被叫终端向所述 IWS 返回拒绝消息; 步骤 109: 当所述 IWS 在接收到所述被叫终端的接听消息后, 向所述 MSC返回接听消息; 当所述 IWS在接收到所述被叫终端的拒绝消息后, 向 所述 MSC返回拒绝消息; 步骤 110: 当所述 IWS接收到所述被叫终端发送的接听消息后, 向被叫 终端发送切换命令, 指示被叫终端切换到 lx空口, 并指配相应的业务信道; 其中, 如图 2和图 3所示, 本实施例提出上述方法还可包括: 步骤 111 : 所述 IWS向 MSC返回分配完成消息后或在接收到所述被叫 终端发送的接听消息后, 为所述被叫终端申请语音呼叫业务信道资源; 具体 的, 所述为被叫终端申请语音呼叫业务信道资源包括但不局限于: IWS发起 基站控制器(Base Station Controller, BSC ) 间的硬切换流程, 或者当 IWS 与 lxBS处于同一设备时, 由 IWS所在的 lxBS直接分配业务信道资源; 其 中, 具体的硬切换流程可以包括但不限于:
S1 : 所述 IWS向所述 MSC发送切换要求;
S2:所述 MSC接收到 IWS发送的切换要求后,向 1XBS发送切换请求;
S3: 所述 1XBS为当前呼叫分配了相应资源后, 向所述 MSC返回切换 清求确认;
S4: 所述 MSC接收到切换请求确认后向所述 IWS发送切换命令; 此外, 在所述终端切换到 IX空口后, 所述 IWS还可以发送切换开始消 息给 MSC, 已完成此次语音呼叫流程。 可以看出, 通过上述各实施例的方法, 通过寻呼到位于数据网络的被叫 终端后, 不论所述被叫用户是否选择接听都向 MSC返回寻呼响应, 能够避 免因 MSC没有及时收到寻呼响应而做出的不在服务区的错误判决, 提高了 语音呼叫的通信效率; 同时由于及时的返回了寻呼响应, 使得所述 MSC可 以及时向主叫方返回回铃音,从而也进一步提高了用户感受;此外,通过 IWS 与 MSC之间有关资源分配的信息交互, 也可以不对现有流程和系统做出改 动, 从而实现了与现有系统和流程更好的兼容性。 基于上述思想, 本发明实施例 2又提出了一种实现异系统间呼叫控制的 装置,如图 4所示,该装置 400包括:第一处理单元 401、第二处理单元 402、 第三处理单元 403和第四处理单元 404; 其中, 所述第一处理单元 401用于接收所述 MSC发送的第一寻呼消息后, 通 过数据网络向被叫终端发送第二寻呼消息;
所述第二处理单元 402用于接收被叫终端在收到所述第二寻呼消息后返 回的第一寻呼响应, 并向 MSC发送第二寻呼响应; 所述第三处理单元 403用于接收所述 MSC在收到第二寻呼响应后发送 的资源分配请求消息后, 向所述 MSC返回资源分配完成消息;
所述第四处理单元 404用于根据被叫用户的选择向所述 MSC返回接听 或拒绝接听消息, 并当所述被叫用户选择接听后, 指示被叫终端切换到语音 网络, 并指配相应的业务信道。 此外, 该装置还可包括: 第五处理单元 405, 用于在所述第三处理单元 向 MSC返回资源分配完成消息后或在所述被叫用户选择接听后, 为所述被 叫终端申请语音呼叫业务信道资源。 其中, 当所述装置与 lxBS处于同一设备时, 由该装置所在的 lxBS直 接分配业务信道资源; 而当所述装置为独立的模块时, 所述第五处理单元还 可包括: 发送模块和接收模块; 其中, 所述发送模块用于向所述 MSC发送切换要求; 所述接收模块用于接收 所述 MSC返回的切换命令; 其中, 所述切换命令为: 所述 MSC向基站发送 切换请求并在所述基站确认为当前呼叫分配了相应资源后返回的。
此外, 本发明实施例 3又提出了一种终端, 如图 5所示, 该终端 500包 括: 接收单元 501、 发送单元 502和切换单元 503 ; 其中, 所述接收单元 501 用于接收寻呼消息和切换命令, 并通知所述发送单元 502或切换单元 503 ; 所述发送单元 502用于根据所述接收单元 501的通知发送寻呼响应, 并 在用户选择接听语音呼叫时发送接听消息;
所述切换单元 503用于根据所述接收单元 501通知的切换命令, 将所述 终端切换到语音网络。 需要注意的是, 本领域技术人员很容易了解, 上述实施例中所描述的实 现异系统间呼叫控制的装置和终端也可以作为系统的一部分存在, 并在系统 与所述 MSC进行信息交互以实现与上述实施例中描述一致的作用, 因而包 含上述实施例中实现异系统间呼叫控制的装置和移动终端的系统也应包含 在本申请的保护范围之内, 在此不再赘述。 专业人员还可以进一步应能意识到, 结合本文中所公开的实施例描述的 各示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合来 实现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照功能 一般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件方式来 执行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每 个特定的应用来使用不同方法来实现所描述的功能, 但是这种实现不应认为 超出本发明实施例的范围。 结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、 处理器执行的软件模块, 或者二者的结合来实施。 软件模块可以置于随机存 储器(RAM )、 内存、 只读存储器(ROM )、 电可编程 ROM、 电可擦除可编 程 ROM、 寄存器、 硬盘、 可移动磁盘、 CD-ROM、 或技术领域内所公知的 任意其它形式的存储介质中。 对所公开的实施例的上述说明, 使本领域专业技术人员能够实现或使用 本发明实施例。 对这些实施例的多种修改对本领域的专业技术人员来说将是 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实施例的精神或 范围的情况下, 在其它实施例中实现。 因此, 本发明实施例将不会被限制于 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。 以上所述仅为本发明实施例的较佳实施例而已, 并不用以限制本发明实 施例, 凡在本发明实施例的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明实施例的保护范围之内。

Claims

权 利 要 求
1、 一种实现异系统间呼叫控制的方法, 其特征在于, 该方法包括: 接收移动交换中心 MSC发送的第一寻呼消息, 通过数据网络向被叫终 端发送第二寻呼消息; 接收被叫终端在收到所述第二寻呼消息后返回的第一寻呼响应,向 MSC 发送第二寻呼响应; 接收所述 MSC在收到第二寻呼响应后发送的资源分配请求消息后, 向 所述 MSC返回资源分配完成消息; 根据被叫用户的选择向所述 MSC返回接听或拒绝接听消息, 并当所述 被叫用户选择接听后, 指示被叫终端切换到语音网络, 并指配相应的业务信 道。
2、 根据权利要求 1所述的方法, 其特征在于, 该方法还包括: 向 MSC 返回资源分配完成消息后或在所述被叫用户选择接听后, 为所述被叫终端申 请语音呼叫业务信道资源。
3、 根据权利要求 2所述的方法, 其特征在于, 所述为被叫终端申请语 音呼叫业务信道资源包括: 发起基站控制器间的硬切换流程, 或者直接分配 业务信道资源。
4、 根据权利要求 3 所述的方法, 其特征在于, 所述发起基站控制器间 的硬切换流程包括: 向所述 MSC发送切换要求, 并接收所述 MSC返回的切换命令; 其中, 所述接收到的切换命令为: 所述 MSC向基站发送切换请求并在所述基站确 认为当前呼叫分配了相应资源后返回的。
5、 根据权利要求 2所述的方法, 其特征在于, 该方法还包括: 如果接收到 MSC发送的主叫号码, 则通过数据网络向被叫终端发送包 含主叫号码的第二寻呼消息, 或者在接收到所述分配请求消息后向所述被叫 终端发送携带主叫号码的振铃消息。
6、 一种实现异系统间呼叫控制的装置, 其特征在于, 该装置包括: 第 一处理单元、 第二处理单元、 第三处理单元和第四处理单元; 其中, 所述第一处理单元用于接收所述 MSC发送的第一寻呼消息后, 通过数 据网络向被叫终端发送第二寻呼消息;
所述第二处理单元用于接收被叫终端在收到所述第二寻呼消息后返回 的第一寻呼响应, 并向 MSC发送第二寻呼响应; 所述第三处理单元用于接收所述 MSC在收到第二寻呼响应后发送的资 源分配请求消息后, 向所述 MSC返回资源分配完成消息; 所述第四处理单元用于根据被叫用户的选择向所述 MSC返回接听或拒 绝接听消息,并当所述被叫用户选择接听后,指示被叫终端切换到语音网络, 并指配相应的业务信道。
7、 根据权利要求 6所述的装置, 其特征在于, 该装置还包括: 第五处 理单元, 用于在所述第三处理单元向 MSC返回资源分配完成消息后或在所 述被叫用户选择接听后, 为所述被叫终端申请语音呼叫业务信道资源。
8、 根据权利要求 7所述的装置, 其特征在于, 所述第五处理单元包括: 发送模块和接收模块; 其中, 所述发送模块用于向所述 MSC发送切换要求; 所述接收模块用于接收所述 MSC返回的切换命令; 其中, 所述切换命 令为: 所述 MSC向基站发送切换请求并在所述基站确认为当前呼叫分配了 相应资源后返回的。
9、 一种终端, 其特征在于, 包括: 接收单元、 发送单元和切换单元; 其中, 所述接收单元用于接收寻呼消息和切换命令, 并通知所述发送单元或 切换单元; 所述发送单元用于根据所述接收单元的通知发送寻呼响应, 并在用户选 择接听语音呼叫时发送接听消息; 所述切换单元用于根据所述接收单元通知的切换命令, 将所述终端切换 到语音网络。
10、 一种实现异系统间呼叫控制的系统, 包括移动交换中心 MSC, 其特 征在于, 该系统还包括: 互操作模块和移动终端; 其中, 所述 MSC用于向所述互操作模块发送第一寻呼消息, 并在接收到所述 互操作模块返回的第二寻呼响应后, 向所述互操作模块发送资源分配请求, 然后接收所述互操作模块返回的资源分配完成消息; 所述互操作模块用于在接收所述第一寻呼消息后, 通过数据网络向被叫 移动终端发送第二寻呼消息, 接收所述被叫移动终端返回的第一寻呼响应后 向 MSC发送第二寻呼响应, 并在接收到所述资源分配请求后返回资源分配 完成消息, 然后根据被叫用户的选择向所述 MSC返回接听或拒绝接听消息, 并当所述被叫用户选择接听后, 指示被叫终端切换到语音网络, 并指配相应 的业务信道; 所述被叫移动终端用于接收到第二寻呼消息后返回第一寻呼响应, 并根 据被叫用户的选择向所述互操作模块返回接听或拒绝接听消息, 根据所述互 操作模块的切换命令切换到语音网络。
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