公开(公告)号：US10397835B2

公开(公告)日：2019-08-27

申请号：US15585390

申请日：2017-05-03

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Xiaobo Wu ,  Hai Liu ,  Wei Xiao

IPC: H04W36/00 ,  H04W68/00 ,  H04W8/26 ,  H04W36/14 ,  H04W76/02 ,  H04W72/04 ,  H04W76/10

Abstract: A method for voice call fallback to a circuit switched (CS) domain disclosed in the present invention includes: receiving a Service Request message from a calling user equipment (UE), where the Service Request message includes called number information of a voice call in a CS domain, instructing an evolved NodeB (eNB) to initiate circuit switched fallback (CSFB) handover; receiving a Handover Request message from the eNB, where the Handover Request message includes information required for CS handover, selecting a mobile switching center (MSC) and sending a packet switched (PS) to CS Handover Request message to the MSC, where the PS to CS Handover Request message carries information required for the CS handover and a called number so that the MSC calls a called UE. The corresponding apparatuses and systems are also disclosed. The technical solution of the present invention can reduce the connection delay.

公开(公告)号：US10362513B2

公开(公告)日：2019-07-23

申请号：US15944622

申请日：2018-04-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hai Liu ,  Xiaobo Wu ,  Caixia Qi

IPC: H04W36/00 ,  H04M7/00 ,  H04M7/12 ,  H04L29/06

Abstract: Embodiments of the present invention provide a method, apparatus, and system for a handover to a circuit switched domain. The method includes: selecting an MSC capable of both CSFB and SRVCC for a UE; and selecting, if a location service of a CS domain triggers an SRVCC procedure for the UE when the UE has a VOIP service in progress, the MSC capable of both CSFB and SRVCC in the SRVCC procedure, so that the UE, after being handed over to the CS domain, accesses the MSC and implements the location service of the CS domain. The apparatus includes: a first selecting module and a second selecting module. The system includes a UE and the apparatus. The embodiments of the present invention enable the UE with the VOIP service in progress to be correctly handed over to the CS domain and implement the location service.

公开(公告)号：US10212634B2

公开(公告)日：2019-02-19

申请号：US15099086

申请日：2016-04-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaobo Wu ,  Guangwei Wang ,  Guobao Xi ,  Chao Sun ,  Xinyong Wang

IPC: H04W36/22 ,  H04W76/18 ,  H04W36/00 ,  H04W36/32 ,  H04W60/04 ,  H04L29/06 ,  H04L29/08

Abstract: A communication method includes: sending, by an MME, a bearer setup request message to an eNodeB, where the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment; and when the MME receives a bearer setup failure message sent by the eNodeB in response to the bearer setup request message, sending, by the MME, an indication message to the user equipment, where the indication message is used to indicate that a voice over VoIMS of the user equipment is unavailable. When setup of a voice bearer of a VoLTE call fails, the user equipment is notified that a VoLTE is unavailable, so that the user equipment can be prevented from continuing attempting to initiate the VoLTE call and exacerbating cell congestion.

公开(公告)号：US09986465B2

公开(公告)日：2018-05-29

申请号：US15208311

申请日：2016-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Hai Liu ,  Lin Shu ,  Yanyan Chen ,  Weisheng Jin

IPC: H04W36/00 ,  H04W36/32 ,  H04W88/00

CPC classification number: H04W36/0005 ,  H04W36/0016 ,  H04W36/0022 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/32 ,  H04W88/005

Abstract: Embodiments of the present invention disclose a method, a mobile switching center and a system for returning to a long term evolution network, which may prevent a UE which does not need to return to the LTE network from mistakenly returning to the LTE network. The method includes: receiving a first CSFB indication corresponding to a UE that is sent by a MME after the UE initiates CSFB, wherein the first CSFB indication is used for identifying that the UE needs to return to a LTE network after circuit service of the UE is finished; and sending, according to the first CSFB indication, a second CSFB indication corresponding to the UE to an RNC/BSC when the circuit service of the UE is finished, wherein the second CSFB indication is used for indicating that the RNC/BSC is to notify the UE of returning to the LTE network.

公开(公告)号：US20170155772A1

公开(公告)日：2017-06-01

申请号：US15429495

申请日：2017-02-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei Chong ,  Xiaobo Wu ,  Shengze Zu

IPC: H04M15/00 ,  H04W72/04 ,  H04W4/24 ,  H04W8/18

CPC classification number: H04M15/60 ,  H04M15/66 ,  H04W4/24 ,  H04W8/18 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/30

Abstract: A device and a method for implementing a data service in order to avoid generating an unnecessary data usage fee for user equipment (UE) and further avoid data usage waste after a data service switch of the UE is turned off. The method includes determining, by a first network-side device, a status of a data service switch of UE, and sending, by the first network-side device, a first notification message to a second network-side device when the data service switch of the UE is turned off, where the UE is already registered with a network, the first notification message includes first instruction information and an identity of the UE, and the first instruction information instructs the second network-side device to skip charging for data packets of the UE flowing through the second network-side device.

公开(公告)号：US09648522B2

公开(公告)日：2017-05-09

申请号：US13930593

申请日：2013-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Hai Liu ,  Wei Xiao

IPC: H04W36/00 ,  H04W8/26 ,  H04W36/14 ,  H04W68/00 ,  H04W72/04 ,  H04W76/02

CPC classification number: H04W36/0022 ,  H04W8/26 ,  H04W36/14 ,  H04W68/00 ,  H04W72/042 ,  H04W76/10

Abstract: A method for voice call fallback to a circuit switched (CS) domain disclosed in the present invention includes: receiving a Service Request message from a calling user equipment (UE), where the Service Request message includes called number information of a voice call in a CS domain, instructing an evolved NodeB (eNB) to initiate circuit switched fallback (CSFB) handover; receiving a Handover Request message from the eNB, where the Handover Request message includes information required for CS handover, selecting a mobile switching center (MSC) and sending a packet switched (PS) to CS Handover Request message to the MSC, where the PS to CS Handover Request message carries information required for the CS handover and a called number so that the MSC calls a called UE. The corresponding apparatuses and systems are also disclosed. The technical solution of the present invention can reduce the connection delay.

公开(公告)号：US09497665B2

公开(公告)日：2016-11-15

申请号：US14561037

申请日：2014-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Hai Liu ,  Lin Shu ,  Yanyan Chen ,  Weisheng Jin

IPC: H04W40/00 ,  H04W36/00

CPC classification number: H04W36/0005 ,  H04W36/0016 ,  H04W36/0022 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/32 ,  H04W88/005

Abstract: Embodiments of the present invention disclose a method, a mobile switching center and a system for returning to a long term evolution network, which may prevent a UE which does not need to return to the LTE network from mistakenly returning to the LTE network. The method includes: receiving a first CSFB indication corresponding to a UE that is sent by a MME after the UE initiates CSFB, wherein the first CSFB indication is used for identifying that the UE needs to return to a LTE network after circuit service of the UE is finished; and sending, according to the first CSFB indication, a second CSFB indication corresponding to the UE to an RNC/BSC when the circuit service of the UE is finished, wherein the second CSFB indication is used for indicating that the RNC/BSC is to notify the UE of returning to the LTE network.

Abstract translation: 本发明的实施例公开了一种方法，移动交换中心和用于返回到长期演进网络的系统，其可以防止不需要返回LTE网络的UE错误地返回到LTE网络。 该方法包括：在UE发起CSFB之后，接收与MME发送的对应的UE的第一CSFB指示，其中，第一CSFB指示用于在UE的电路业务之后识别UE需要返回到LTE网络 结束了; 以及当所述UE的电路服务完成时，根据所述第一CSFB指示将与所述UE对应的第二CSFB指示发送到RNC / BSC，其中所述第二CSFB指示用于指示所述RNC / BSC要通知 UE返回LTE网络。

公开(公告)号：US09491667B2

公开(公告)日：2016-11-08

申请号：US14201030

申请日：2014-03-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Hai Liu ,  Wenruo Zhu

IPC: H04W4/00 ,  H04W36/00

CPC classification number: H04W36/0022

Abstract: The present invention discloses a method and a device for handover to a serving network. The method includes: receiving a first Handover Request sent by a BSC/RNC; sending a second Handover Request to a target MME according to the first Handover Request, where the second Handover Request includes an IMSI and first information for determining a source SGSN so that the MME sends a Context Request message including the IMSI to the source SGSN and receives context information of a UE that corresponds to the IMSI and is sent by the source SGSN. Thereby avoiding a handover failure which is caused because the MSC server and the SGSN select different MMEs, and further synchronizing PS and CS handover processes, improving handover accuracy and efficiency, and enhancing user experience.

Abstract translation: 本发明公开了一种切换到服务网络的方法和装置。 该方法包括：接收BSC / RNC发送的第一切换请求; 根据第一切换请求向目标MME发送第二切换请求，其中第二切换请求包括IMSI和用于确定源SGSN的第一信息，使得MME向源SGSN发送包括IMSI的上下文请求消息，并且接收 与IMSI对应并由源SGSN发送的UE的上下文信息。 从而避免由于MSC服务器和SGSN选择不同的MME导致的切换失败，并且进一步使PS和CS切换过程同步，从而提高切换精度和效率，并提高用户体验。

公开(公告)号：US20160309439A1

公开(公告)日：2016-10-20

申请号：US15196456

申请日：2016-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Yangming Lv ,  Guobao Xi

IPC: H04W60/00 ,  H04W36/00 ,  H04W8/02

CPC classification number: H04W60/005 ,  H04W8/02 ,  H04W8/06 ,  H04W36/0022 ,  H04W48/18

Abstract: The present invention discloses an LTE network selection method. In a process of implementing CSFB combined registration, an MME of a Long Term Evolution LTE network sends a location area identity LAI to UE, where the LAI includes a PLMN identity of the LTE network, so that after a circuit switched fallback-based voice session ends, the UE preferably returns to the LTE network according to the PLMN identity.

Abstract translation: 本发明公开了一种LTE网络选择方法。 在实施CSFB组合注册的过程中，长期演进LTE网络的MME向UE发送位置区域标识LAI，其中LAI包括LTE网络的PLMN标识，使得在基于电路交换的基于后退的语音会话 结束时，UE优选地根据PLMN身份返回到LTE网络。

公开(公告)号：US20160249258A1

公开(公告)日：2016-08-25

申请号：US15146063

申请日：2016-05-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaobo Wu ,  Ye Zou

IPC: H04W36/00 ,  H04W76/02 ,  H04M1/57 ,  H04W68/02

CPC classification number: H04W36/0022 ,  H04M1/57 ,  H04W8/22 ,  H04W68/02 ,  H04W76/10

Abstract: The present invention discloses a network handover method, where in a process of implementing circuit switched fallback, handover from an LTE network to a 2G or 3G network is triggered, so that UE can be directly handed over from the LTE network to a CS domain of the 2G or 3G network, and the network or the UE uses a session generated in the process in which the called party is handed over from the LTE network to the CS domain of the 2G or 3G network. Therefore, a common called procedure does not need to be performed after the UE is handed over from the LTE network to the 2G or 3G network, thereby shortening time for which a user waits before the voice session is connected.

Abstract translation: 本发明公开了一种网络切换方法，其中在实现电路交换回退的过程中，触发从LTE网络到2G或3G网络的切换，使得UE可以从LTE网络直接切换到CS域 2G或3G网络，网络或UE使用在被叫方从LTE网络切换到2G或3G网络的CS域的过程中生成的会话。 因此，在UE从LTE网络切换到2G或3G网络之后，不需要执行通用的被叫过程，从而缩短用户在语音会话连接之前等待的时间。