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81. 发明公开

EP3462776A1 NETWORK SWITCHING METHOD AND APPARATUS 有权
公开(公告)号：EP3462776A1
公开(公告)日：2019-04-03
申请号：EP18815923.0
申请日：2018-06-19
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHONG, Weiwei , WU, Xiaobo , XIN, Yang
IPC分类号： H04W36/00
摘要： This application discloses a network handover method and apparatus, to resolve a problem that a terminal device cannot perform an IMS voice service. The method includes: receiving, by a first access network device, first session management information from a session management network element, where the first session management information is for requesting to set up a user plane tunnel for a voice service of a terminal device; and sending, by the first access network device, a handover request to a first mobility management network element based on the first session management information and a first condition, where the handover request is for handing over the terminal device from a first network to a second network, and the first condition includes that the voice service cannot be performed in the first network. This application is applicable to the field of communications technologies.

82. 发明公开

EP3324702A1 CIRCUIT SWITCHED FALLBACK METHOD AND APPARATUS 审中-公开
公开(公告)号：EP3324702A1
公开(公告)日：2018-05-23
申请号：EP15901369.7
申请日：2015-08-17
申请人： Huawei Technologies Co., Ltd.
发明人： CHONG, Weiwei
IPC分类号： H04W88/14
CPC分类号： H04W88/14 , H04W8/02 , H04W36/0022 , H04W36/08 , H04W36/14 , H04W88/021 , H04W88/12
摘要： Embodiments of this application provide a circuit switched fallback (CSFB) method and apparatus. The method includes: learning, by a source access network device, that CSFB needs to be performed on a terminal, where performing the CSFB on the terminal includes moving the terminal from a first standard network to a second standard network; determining, by the source access network device before completing moving of the terminal from the first standard network to the second standard network, that a serving cell handover needs to be performed on the terminal in the first standard network; and performing, by the source access network device, the serving cell handover on the terminal, where the source access network device sends CSFB information to a target access network device in a process of the serving cell handover, and the CSFB information is used for the target access network device to perform the CSFB on the terminal. According to technical solutions in the embodiments of this application, a problem that a voice service of the terminal is omitted because a CSFB procedure conflicts with a serving cell handover procedure can be avoided.

83. 发明公开

EP3280178A1 METHOD, NETWORK DEVICE AND SYSTEM FOR CIRCUIT SWITCHED FALLBACK 审中-公开
标题翻译：方法，网络设备和系统，用于电路切换回退
公开(公告)号：EP3280178A1
公开(公告)日：2018-02-07
申请号：EP15891068.7
申请日：2015-05-05
申请人： Huawei Technologies Co., Ltd.
发明人： CHONG, Weiwei , WU, Xiaobo
IPC分类号： H04W36/00
CPC分类号： H04W36/0022 , H04W36/00 , H04W36/0033
摘要： Embodiments of the present invention disclose a circuit switched fallback method, a network device, and a system. The method includes: determining, by the network device, that a serving cell handover process of user equipment UE is ended; determining, by the network device, that before the serving cell handover process of the UE is ended, it has been determined that the UE needs to be moved to a second network, where the second network is a network that supports a circuit switched service; and moving, by the network device, the UE to the second network. According to the foregoing method, when CSFB triggered by a CS service initiated by UE conflicts with a serving cell handover process of the UE, a network device may move, after completing the serving cell handover process of the UE, the UE to a network supporting the CS service, so that the CS service of the UE can continue to be performed. In this way, a success rate of establishing the CS service is increased. The present invention further discloses a network device and a system for circuit switched fallback.
摘要翻译：本发明实施例公开了一种电路交换回退方法，网络设备和系统。该方法包括：网络设备确定用户设备UE的服务小区切换过程结束; 所述网络设备确定所述UE的服务小区切换过程结束之前，确定所述UE需要移动到第二网络，所述第二网络为支持电路交换业务的网络; 所述网络设备将所述UE移动到所述第二网络。根据上述方法，当UE发起的CS业务触发的CSFB与UE的服务小区切换过程冲突时，网络设备在完成UE的服务小区切换过程后，可以将UE移动到支持网络 CS业务，从而可以继续执行UE的CS业务。这样就增加了建立CS业务的成功率。本发明还公开了一种网络设备和电路交换回退系统。

84. 发明公开

EP3174356A1 SERVICE PROCESSING METHOD, SERVICE PROCESSING DEVICE, AND COMMUNICATION SYSTEM 有权
标题翻译：服务处理方法，服务处理设备和通信系统
公开(公告)号：EP3174356A1
公开(公告)日：2017-05-31
申请号：EP15901179.0
申请日：2015-11-13
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： WU, Xiaobo , CHONG, Weiwei
IPC分类号： H04W76/00
CPC分类号： H04W76/18 , H04L65/1069 , H04W28/0231 , H04W28/0236 , H04W36/0022 , H04W48/02 , H04W76/00 , H04W76/16
摘要： A service processing method, a service processing apparatus, and a communications system are provided. The service processing method includes: receiving, by an access network device, from a core network device, a bearer setup request message of a VoLTE service; and rejecting, by the access network device, the bearer setup request message when determining that LTE network signal quality of a terminal of the VoLTE service cannot satisfy the VoLTE service. The technical solutions provided in embodiments of the present invention help improve stability of an established VoLTE service, thereby helping improve call experience of a user.
摘要翻译：提供了一种业务处理方法，业务处理装置和通信系统。该业务处理方法包括：接入网设备从核心网设备接收VoLTE业务的承载建立请求消息; 当确定所述VoLTE业务的终端的LTE网络信号质量不能满足所述VoLTE业务时，所述接入网设备拒绝所述承载建立请求消息。本发明实施例提供的技术方案有助于提高已建立的VoLTE业务的稳定性，从而有助于改善用户的通话体验。

85. 发明公开

EP3148252A1 VOICE SERVICE SWITCHING METHOD AND DEVICE IN SINGLE RADIO VOICE CALL CONTINUITY 有权
标题翻译： EINZELFUNKSPRACHANRUFKONTINUITÄTSPRACHDIENSTUMSCHALTVERFAHREN UND VORRICHTUNG
公开(公告)号：EP3148252A1
公开(公告)日：2017-03-29
申请号：EP14896691.4
申请日：2014-06-30
申请人： Huawei Technologies Co. Ltd.
发明人： YE, Yanglin , WU, Xiaobo , CHONG, Weiwei , DENG, Tao
IPC分类号： H04W36/14
CPC分类号： H04W36/0022 , H04W36/0016 , H04W36/14 , H04W88/14 , H04W88/16
摘要： The present invention discloses a single radio voice call continuity handover method and apparatus. An MME records whether a bearer deletion request message sent by a gateway device is received, and if the MME determines that the bearer deletion request message is received, the MME does not send a bearer deletion instruction message to the gateway device, and does not delete a local voice service bearer resource. Therefore, after the MME performs voice service bearer deletion on an IMS side, the MME does not perform voice service bearer deletion on an EPS side, thereby avoiding a conflict in an SRVCC process. Alternatively, when a reason for session termination is SRVCC handover, a PCRF does not send a re-authentication request message to the gateway device, that is, the gateway device does not perform a voice bearer deletion process on the IMS side, thereby avoiding a conflict in an SRVCC process. Alternatively, a delay timer is started on an IMS, and before a delay time expires, the IMS releases an IMS access leg after receiving a session interrupt request message sent by the PCRF, and does not initiate the voice bearer deletion process, thereby avoiding a conflict in an SRVCC process.
摘要翻译：本发明公开了一种单无线语音呼叫连续性切换方法及装置。 MME记录是否接收到由网关装置发送的承载删除请求消息，如果MME确定接收到承载删除请求消息，则MME不向网关设备发送承载删除指示消息，不删除本地语音业务承载资源。因此，在MME在IMS侧进行语音服务承载删除之后，MME不在EPS侧执行语音服务承载删除，从而避免SRVCC进程中的冲突。或者，当会话终止的原因是SRVCC切换时，PCRF不向网关装置发送重认证请求消息，即，网关装置不在IMS侧执行语音承载删除处理，从而避免 SRVCC过程中的冲突。或者，在IMS上启动延迟定时器，并且在延迟时间到期之前，IMS在接收到PCRF发送的会话中断请求消息之后释放IMS接入分支，并且不发起语音承载删除处理，从而避免 SRVCC过程中的冲突。

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