公开(公告)号：US20160007239A1

公开(公告)日：2016-01-07

申请号：US14770707

申请日：2014-02-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Venkateswara Rao MANEPALLI ,  Subhasish KARMAKAR

IPC: H04W36/00 ,  H04W76/04 ,  H04W72/04

CPC classification number: H04W36/0022 ,  H04W72/0453 ,  H04W76/27

Abstract: A method and a system to improve circuit switched fall back (CSFB) performance specified in the 3rd generation partnership project (3GPP) standard are provided. The system includes a user equipment (UE) to collect a neighbor frequency list from the network along with the redirection frequency transmitted by the long term evolution (LTE) network in response to extended service request (ESR) initiated by the UE. The UE selects the best frequency on which the UE can camp for CS call by applying additional offset criteria over the existing S-criteria during selection of serving frequency that effectively increases CSFB call success rate. The method enables the UE to override timer T300 and parameter N300 in the radio resource control (RRC) connection establishment process during a CSFB call procedure and effectively utilize the ESR time to attempt maximum possible RRC connection requests.

Abstract translation: 提供了一种改善第三代合作伙伴计划（3GPP）标准中规定的电路交换回退（CSFB）性能的方法和系统。 该系统包括用于响应于由UE发起的扩展服务请求（ESR）从网络收集邻居频率列表以及由长期演进（LTE）网络发送的重定向频率的用户设备（UE）。 通过在选择服务频率期间，通过在现有的S条件下应用额外的偏移准则来选择可以驻留CS呼叫的最佳频率，以有效地增加CSFB呼叫成功率。 该方法使UE能够在CSFB呼叫过程中在无线资源控制（RRC）连接建立过程中覆盖定时器T300和参数N300，并且有效利用ESR时间尝试最大可能的RRC连接请求。

公开(公告)号：US20160066235A1

公开(公告)日：2016-03-03

申请号：US14843461

申请日：2015-09-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Bharat Vinayak BHAT ,  Nitin JAIN ,  Subhasish KARMAKAR

IPC: H04W36/14 ,  H04W76/04

CPC classification number: H04W36/14 ,  H04W36/0083 ,  H04W48/02

Abstract: Methods and apparatuses are provided for providing service recovery at a user equipment (UE) of a mobile communication network. The UE establishes a call in a first public land mobile network (PLMN). A handover zone of the first PLMN and a second PLMN is entered. The second PLMN is in a forbidden PLMN list of the UE. The UE receives a dedicated message with an indication of the second PLMN. The second PLMN is removed from the forbidden PLMN list. The UE performs registration with the second PLMN so that services of the second PLMN are available to the UE.

Abstract translation: 提供了用于在移动通信网络的用户设备（UE）处提供服务恢复的方法和装置。 UE在第一公共陆地移动网络（PLMN）中建立呼叫。 输入第一PLMN和第二PLMN的切换区域。 第二PLMN在UE的禁止的PLMN列表中。 UE接收具有第二PLMN的指示的专用消息。 从禁止的PLMN列表中删除第二PLMN。 UE执行与第二PLMN的注册，使得第二PLMN的服务对于UE是可用的。