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    Methods and apparatus for voice domain operation
    5.
    发明授权
    Methods and apparatus for voice domain operation 有权
    语音域操作的方法和装置

    公开(公告)号：US09113403B2

    公开(公告)日：2015-08-18

    申请号：US14266796

    申请日：2014-04-30

    申请人： BlackBerry Limited

    发明人： Stefano Faccin ,  Chen Ho Chin ,  Richard Charles Burbidge

    IPC分类号： H04W48/18 ,  H04W76/02 ,  H04W84/04

    CPC分类号： H04W48/18 ,  H04W84/042

    摘要： Methods and apparatus for voice domain operation are described herein. One example method includes determining that an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) network is not preferred for voice service based on receiving a response message to a NAS message via the E-UTRA network, wherein the response message to the Non-Access Stratum (NAS) message comprises an indication that no voice service is available, storing an identification of a first public land mobile network (PLMN), wherein the first PLMN is associated with the E-UTRA network that is not preferred for voice service, and avoiding selection of a second PLMN's E-UTRA network when an identification of the second PLMN matches the identification of the first PLMN.

    摘要翻译： 本文描述了用于语音域操作的方法和装置。 一种示例性方法包括：基于经由E-UTRA网络接收到NAS消息的响应消息，确定演进通用移动通信系统（UMTS）陆地无线接入（E-UTRA）网络对语音服务不是优选的，其中响应 消息到非接入层（NAS）消息包括没有语音服务可用的指示，存储第一公共陆地移动网络（PLMN）的标识，其中第一PLMN与不是的E-UTRA网络相关联 优选用于语音服务，并且当第二PLMN的标识符合第一PLMN的标识时，避免选择第二PLMN的E-UTRA网络。

    RESPONSE TO A NON ACCESS STRATUM MESSAGE
    7.
    发明申请
    RESPONSE TO A NON ACCESS STRATUM MESSAGE 审中-公开

    公开(公告)号：US20190124717A1

    公开(公告)日：2019-04-25

    申请号：US16227196

    申请日：2018-12-20

    申请人： BLACKBERRY LIMITED

    发明人： Noun Choi ,  Stefano Faccin ,  Chen Ho Chin

    IPC分类号： H04W76/30 ,  H04W76/32 ,  H04W76/34 ,  H04W36/08 ,  H04W60/00 ,  H04W8/02

    摘要： A mobility management node in A core network receives a first Non Access Stratum (NAS) message via a second network element from a user equipment (UE), wherein the mobility management node stores a first identifying characteristic associated with at least one of a Local IP Access (LIPA) packet data network (PDN) connection or a selected IP traffic offload (SIPTO) PDN connection, the at least one of the LIPA PDN connection or the SIPTO PDN connection being via a first network element and for the UE. The mobility management node detects that the UE is connected to the second network element that is different from the first network element that has the first identifying characteristic, and in response to a condition that each PDN connection of the UE is a LIPA PDN connection or a SIPTO PDN connection, sends a second NAS message, the second NAS message including a cause code with a value that represents “No EPS Bearer Context Activated.”

    Methods and apparatus to handle bearers during circuit switched fallback operation
    10.
    发明授权
    Methods and apparatus to handle bearers during circuit switched fallback operation 有权
    在电路交换回退操作期间处理承载的方法和装置

    公开(公告)号：US09516567B2

    公开(公告)日：2016-12-06

    申请号：US14736033

    申请日：2015-06-10

    申请人： BlackBerry Limited

    发明人： Stefano Faccin ,  Wei Wu ,  Chen Ho Chin

    IPC分类号： H04W36/14 ,  H04W36/00 ,  H04W28/08 ,  H04W36/24

    CPC分类号： H04W36/14 ,  H04W28/085 ,  H04W36/0022 ,  H04W36/24

    摘要： Methods and apparatus to provide packet switched service continuity during circuit switched fallback operation are described. One example method includes determining a set of access technologies available to a User Equipment (UE); identifying a WLAN access network from the set of access technologies; identifying a 3GPP RAT from the set of access technologies; prioritizing the WLAN access network type with respect to types of 3GPP RAT; and selecting one access technology from amongst the identified WLAN access network and the 3GPP RAT according to the prioritizing.

    摘要翻译： 描述了在电路交换回退操作期间提供分组交换服务连续性的方法和装置。 一个示例性方法包括确定可用于用户设备（UE）的一组接入技术; 从所述一组接入技术中识别WLAN接入网络; 从所述一组接入技术中识别3GPP RAT; 针对3GPP RAT的类型优先考虑WLAN接入网络类型; 以及根据优先级从所识别的WLAN接入网络和3GPP RAT中选择一种接入技术。