公开(公告)号：US09288720B2

公开(公告)日：2016-03-15

申请号：US14049146

申请日：2013-10-08

Applicant: Apple Inc.

Inventor： Gaurav R. Nukala ,  Giri Prassad Deivasigamani ,  Si Li

IPC: H04W36/36 ,  H04W36/00

CPC classification number: H04W36/00 ,  H04W36/0055 ,  H04W36/36

Abstract: Apparatus and methods of performing a network cell reselection for a mobile device after a handover attempt fails. Initially, a handover is attempted for the mobile device in a radio resource control (RRC) connected mode from a serving network base station to a target network base station. Next a failure condition associated with the handover attempt is identified by the mobile device. In one scenario, the failure condition is identified in response to the mobile device receiving an RRC connection release message from its serving network base station. In another scenario, the failure condition is identified when the mobile device detects a radio link failure event. Thereafter, the mobile device performs a network scan to identify any available network base stations for the network cell reselection. Subsequently, the mobile device attaches to a preferred network base station of the identified available network base stations to complete the network cell reselection.

Abstract translation: 在切换尝试失败之后为移动设备执行网络小区重选的装置和方法。 最初，在从服务网络基站到目标网络基站的无线电资源控制（RRC）连接模式中，针对移动设备尝试切换。 接下来，移动设备识别与切换尝试相关联的故障条件。 在一种情况下，响应于移动设备从其服务网络基站接收到RRC连接释放消息来识别故障条件。 在另一种情况下，当移动设备检测到无线电链路故障事件时，识别故障条件。 此后，移动设备执行网络扫描以识别用于网络小区重选的任何可用的网络基站。 随后，移动设备连接到所识别的可用网络基站的优选网络基站，以完成网络小区重新选择。

公开(公告)号：US09241309B2

公开(公告)日：2016-01-19

申请号：US14070827

申请日：2013-11-04

Applicant: Apple Inc.

Inventor： Giri Prassad Deivasigamani

IPC: H04W52/02

CPC classification number: H04W52/0216 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/23

Abstract: Method and apparatus for dynamic configuration of an inactivity timeout period for a data radio bearer used to transport data for a data service between a wireless communication device and a wireless network is provided. The method includes formatting a message including information related to the data service. The method further includes sending the message from the wireless communication device to the wireless network that is attendant to establishment of the data radio bearer for the data service. The method additionally includes receiving, at the wireless communication device, an assignment of the data service to the data radio bearer. The data radio bearer can have a customized inactivity timeout period defined by the wireless network based at least in part on the information in the message provided by the wireless communication device. The method also includes sending data for the data service over the data radio bearer.

Abstract translation: 提供了用于动态配置用于在无线通信设备和无线网络之间传输数据服务的数据的数据无线承载的非活动超时周期的方法和装置。 该方法包括格式化包括与数据服务有关的信息的消息。 该方法还包括将消息从无线通信设备发送到与数据服务的数据无线承载的建立有关的无线网络。 该方法还包括在无线通信设备处接收数据服务到数据无线承载的分配。 至少部分地基于由无线通信设备提供的消息中的信息，数据无线电承载可以具有由无线网络定义的定制的不活动超时时段。 该方法还包括通过数据无线承载发送数据服务的数据。

公开(公告)号：US20140064253A1

公开(公告)日：2014-03-06

申请号：US13830935

申请日：2013-03-14

Applicant: APPLE INC.

Inventor： Giri Prassad Deivasigamani ,  Gaurav Nukala ,  Muhammad A. Alam

IPC: H04W36/30

CPC classification number: H04W36/0083 ,  H04W24/08 ,  H04W36/0088 ,  H04W36/30 ,  Y02B70/30 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264

Abstract: A method for reducing call drops in uplink power limited scenarios is disclosed. The method can include a wireless communication device determining that the wireless communication device is experiencing an uplink power limited condition in which a transmission power of the wireless communication device is limited to a level below a power class level of the wireless communication device. The method can further include defining a downlink power threshold for sending a measurement report for triggering a handover based on the uplink power limited condition. The downlink power threshold can be higher than a threshold configured by a serving base station. The method can additionally include determining based on measured downlink power that the calculated downlink power threshold is satisfied and sending a measurement report for triggering a handover to the serving base station in response to the downlink power threshold being satisfied.

Abstract translation: 公开了一种用于减少上行链路功率限制情况中的呼叫丢弃的方法。 该方法可以包括无线通信设备，其确定无线通信设备正在经历其中无线通信设备的发送功率被限制在低于无线通信设备的功率等级水平的水平的上行链路功率限制条件。 该方法还可以包括定义下行链路功率阈值，用于基于上行链路功率限制条件发送用于触发切换的测量报告。 下行链路功率阈值可以高于由服务基站配置的阈值。 该方法还可以包括基于所测量的下行链路功率确定所计算的下行链路功率阈值被满足，并且响应于满足下行链路功率阈值而发送用于触发切换到服务基站的测量报告。

公开(公告)号：US20140064195A1

公开(公告)日：2014-03-06

申请号：US13738083

申请日：2013-01-10

Applicant: APPLE INC.

Inventor： Si Li ,  Giri Prassad Deivasigamani

IPC: H04W56/00

CPC classification number: H04W56/00 ,  H04W36/08 ,  H04W74/02 ,  H04W74/04 ,  H04W74/08

Abstract: Regaining uplink synchronization after timing alignment failure in cellular communications. An out-of-sync condition with a cellular network may be detected. A first type of random access procedure may be initiated in response to detecting the out-of-sync condition. It may be determined whether or not a message transmitted as part of the first type of random access procedure is received by the cellular network. If the message transmitted as part of the first type of RACH is received by the network and no response to the message is received from the cellular network, a second type of RACH may be initiated. The second type of RACH may include a message having an indication that an out-of-sync condition occurred.

Abstract translation: 在蜂窝通信中定时定位失败后恢复上行链路同步。 可以检测到与蜂窝网络不同步的情况。 可以响应于检测到不同步状态而启动第一类型的随机接入过程。 可以确定作为第一类型的随机接入过程发送的消息是否被蜂窝网络接收。 如果作为第一类型的RACH发送的消息被网络接收，并且没有从蜂窝网络接收到对消息的响应，则可以启动第二类型的RACH。 第二类型的RACH可以包括具有发生不同步状态的指示的消息。