公开(公告)号：US20180338222A1

公开(公告)日：2018-11-22

申请号：US15596592

申请日：2017-05-16

Applicant: Apple Inc.

Inventor： Venkateswara Rao Manepalli ,  Vijay Kumar Ramamurthi ,  Jianxiong Shi ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Srinivas Burugupalli

IPC: H04W4/02

CPC classification number: H04W4/027 ,  H04B1/385 ,  H04W84/042 ,  H04W88/02

Abstract: Some embodiments relate to a user equipment device (UE), and associated methods for enabling the UE to estimate velocity of the UE based on cellular parameters. In some embodiments, a first velocity of a UE may be estimated based on a first set of parameters associated with one or more cellular based metrics. Doppler measurements may be performed in response to the first velocity exceeding a velocity threshold for at least a time period. In some embodiments, performing (or conducting) the Doppler measurements may be triggered by (e.g., in response to) the first velocity exceeding the velocity threshold for at least the first time period and receiving an indication from a motion processor of the UE that the UE is in a non-static state. In addition, a second velocity of the UE may be estimated based on the first set of parameters and the Doppler measurements.

公开(公告)号：US20160066296A1

公开(公告)日：2016-03-03

申请号：US14830325

申请日：2015-08-19

Applicant: Apple Inc.

Inventor： Li Su ,  Sami M. Almalfouh ,  Venkateswara Rao Manepalli ,  Srinivas Burugupalli ,  Srinivasan Nimmala ,  Vijay Kumar Ramamurthi ,  Stephan V. Schell

IPC: H04W68/00 ,  H04W76/04 ,  H04W72/04

CPC classification number: H04W68/005 ,  H04W64/003 ,  H04W68/02 ,  H04W72/0446 ,  H04W72/048 ,  H04W76/28

Abstract: Various mechanisms for paging link-budget-limited (LBL) devices are disclosed, including: (1) transmitting paging message with non-conventional paging identifier; (2) transmitting paging message(s) with increased power; (3) repeating transmission of paging message to support combining at receiver. Various mechanisms for UE device to signal LBL status are disclosed, including, transmitting status flag or special value of DRX cycle to network node as part of tracking area update and/or attach request. The network node informs a base station of the device's LBL status as part of a paging message. (The network node may, e.g., assign an S-RNTI to the LBL device from a reserved subset of S-RNTI space.) The base station invokes a paging enhancement mechanism when paging an LBL device. Alternatively, the base station may page UE devices without knowledge of LBL status, e.g., by counting paging attempts for a given UE, and boosting power after the Nth paging attempt.

Abstract translation: 公开了用于寻呼链路限制（LBL）设备的各种机制，包括：（1）发送具有非常规寻呼标识符的寻呼消息; （2）以增加的功率发送寻呼消息; （3）重复发送寻呼消息以支持在接收机组合。 公开了用于UE设备信号LBL状态的各种机制，包括作为跟踪区域更新和/或附加请求的一部分，向网络节点发送DRX周期的状态标志或特殊值。 网络节点将设备的LBL状态通知给基站，作为寻呼消息的一部分。 （网络节点可以例如从S-RNTI空间的保留子集向LBL设备分配S-RNTI。）当寻呼LBL设备时，基站调用寻呼增强机制。 或者，基站可以在不知道LBL状态的情况下寻呼UE设备，例如通过对给定UE计数寻呼尝试，以及在第N次寻呼尝试之后升高功率。