公开(公告)号：US09094951B2

公开(公告)日：2015-07-28

申请号：US13828420

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Nilesh Nilkanth Khude ,  Vincent Douglas Park ,  Saurabha Rangrao Tavildar

IPC: H04W72/04 ,  H04L5/00 ,  H04W48/16 ,  H04W52/02 ,  H04W84/04

CPC classification number: H04W72/04 ,  H04L5/00 ,  H04L5/0048 ,  H04W48/16 ,  H04W52/0206 ,  H04W72/0486 ,  H04W84/045 ,  Y02D70/1262

Abstract: Methods and apparatus for allocation of resources for handover related measurements in a communications system including user equipment (UE) devices, a macro base station and small base stations (e.g., femtocells) are described. Some embodiments are well suited for systems where the number of femtocells may equal or outnumber the number of UE devices. In some embodiments a macro base station allocates periodic communications resources for transmission of pilots by UEs or femtocells. The macro base station configures either femtocells or active UEs to transmit pilots using the allocated communications resources based on the relative number of femtocells to active UEs in the coverage area of the macro base station, devices which are lower in number transmitting the pilots. Transmitters (UE devices or femtocells) transmit pilots along with identification information using the allocated resource(s) and receivers measure the pilot signals. The pilot signal measurements may be used to make handover decisions.

Abstract translation: 描述了在包括用户设备（UE）设备，宏基站和小型基站（例如，毫微微小区）的通信系统中用于切换相关测量的资源分配的方法和装置。 一些实施例非常适合于其中毫微微小区的数量可以等于或超过UE设备的数量的系统。 在一些实施例中，宏基站分配用于UE或毫微微小区的导频传输的周期性通信资源。 宏基站配置毫微微小区或活动UE，使用所分配的通信资源，基于毫微微小区的相对数量，向宏基站的覆盖区域中的有效UE发送导频，这些设备数量较少的是传送导频。 发射机（UE设备或毫微微小区）使用所分配的资源与识别信息一起发送导频，并且接收机测量导频信号。 导频信号测量可用于进行切换决策。

公开(公告)号：US20150172846A1

公开(公告)日：2015-06-18

申请号：US14107221

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Ge ,  Junyi Li ,  Vincent Douglas Park

IPC: H04W4/00 ,  H04L29/08 ,  H04W72/04 ,  H04W72/02 ,  H04W8/00 ,  H04W76/02

CPC classification number: H04W4/005 ,  H04L67/12 ,  H04W4/70 ,  H04W8/005 ,  H04W48/20 ,  H04W72/02 ,  H04W72/0453 ,  H04W76/10 ,  H04W88/04

Abstract: Methods, systems, and devices are described for improving uplink communications of machine type communication (MTC) devices. In some embodiments, an MTC device may perform a discovery operation on a first narrow frequency band, establish a first communication link with a discovered relay device on a second narrow frequency band, and transmit MTC data on the second narrow frequency band to the discovered relay device to be relayed to a third device on a second communication link on a broad frequency band. In another embodiment, a first device may participate in a discovery operation with a second device. The first device may establish a communication link with the second device on a first narrow frequency band and receive data from the second device on a second narrow frequency band. The first device may relay the data to a third device over a second communication link on a broad frequency band.

Abstract translation: 描述了用于改进机器类型通信（MTC）设备的上行链路通信的方法，系统和设备。 在一些实施例中，MTC设备可以在第一窄频带上执行发现操作，与第二窄频带上发现的中继设备建立第一通信链路，并将第二窄频带上的MTC数据发送到所发现的中继 设备在宽频带上的第二通信链路上被中继到第三设备。 在另一个实施例中，第一设备可以参与与第二设备的发现操作。 第一设备可以在第一窄频带上建立与第二设备的通信链路，并且在第二窄频带上从第二设备接收数据。 第一设备可以在宽频带上的第二通信链路上将数据中继到第三设备。

公开(公告)号：US20140194130A1

公开(公告)日：2014-07-10

申请号：US13738936

申请日：2013-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： Nilesh Khude ,  Saurabha Rangrao Tavildar ,  Junyi Li ,  Vincent Douglas Park

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04W56/0045

Abstract: A femto base station (BS) maintains two different timings: a femto BS downlink timing and a femto BS uplink timing. A femto base station's uplink reference timing is based on the macro uplink timing being used by one or more UE devices in the local vicinity of the femto BS. In some embodiments, the femto BS synchronizes its femto uplink timing to the macro uplink timing being used by the closest UE device transmitting uplink signals to the macro BS. In other embodiments, the femto BS determines its femto base station uplink timing based on one or more uplink signals from UE devices in its vicinity transmitting to the macro BS. In various embodiments, femto cell uplink signals and macro cell uplink signals are received at a femto cell BS in synchronization. This approach facilitates frequency division multiplexing (FDM) in the uplink between a macro cell and a femto cell.

Abstract translation: 毫微微基站（BS）维护两个不同的定时：毫微微BS下行链路定时和毫微微BS上行链路定时。 毫微微基站的上行链路参考定时是基于在毫微微BS的本地附近的一个或多个UE设备使用的宏上行链路定时。 在一些实施例中，毫微微BS将其毫微微上行链路定时与最近的UE设备使用的宏上行链路定时进行同步，从而向宏BS发送上行链路信号。 在其他实施例中，毫微微BS基于从其附近的UE设备发送到宏BS的一个或多个上行链路信号来确定其毫微微基站上行链路定时。 在各种实施例中，在毫微微小区BS同步地接收毫微微小区上行链路信号和宏小区上行链路信号。 这种方法有助于在宏小区和毫微微小区之间的上行链路中的频分复用（FDM）。