公开(公告)号：US09042903B2

公开(公告)日：2015-05-26

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）。

公开(公告)号：US09026126B2

公开(公告)日：2015-05-05

申请号：US13922506

申请日：2013-06-20

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Saurabha Rangrao Tavildar ,  Aleksandar Jovicic ,  Hongseok Kim

IPC: H04W24/00 ,  H04W72/04 ,  H04W72/02 ,  H04W8/00 ,  H04W16/10 ,  H04W16/14 ,  H04W84/18

CPC classification number: H04W72/04 ,  H04W8/005 ,  H04W16/10 ,  H04W16/14 ,  H04W72/02 ,  H04W72/0486 ,  H04W84/18

Abstract: Various embodiments relate to using available spectrum for peer to peer communications and for selecting which of several possibly available channels should be used. Various methods and apparatus are well suited to peer to peer networks in which channel usage decisions are made in a decentralized manner. A wireless terminal generates a list of potential available channels to be used for peer to peer communications, e.g., based on FCC information and/or local sensing. Channels are filled in accordance with a predetermined channel ordering. A wireless terminal migrates between the channels in accordance with changes in the number of peer devices using a channel. The network, in a distributed manner, changes the number of channels in use at a location in response to changes in numbers of active peer devices at a location.

Abstract translation: 各种实施例涉及使用用于对等通信的可用频谱，并且用于选择应该使用几个可能的可用信道中的哪一个。 各种方法和装置非常适合于以分散方式进行信道使用决定的对等网络。 无线终端产生用于对等通信的潜在可用信道的列表，例如基于FCC信息和/或本地感测。 根据预定的频道顺序填充频道。 根据使用信道的对等设备的数量的变化，无线终端在信道之间迁移。 以分布式方式，网络响应于位置处的活动对等设备的数量的改变来改变在某个位置使用的信道的数量。

公开(公告)号：US20150110101A1

公开(公告)日：2015-04-23

申请号：US14586523

申请日：2014-12-30

Applicant: QUALCOMM Incorporated

Inventor： Saurabha Rangrao Tavildar ,  Thomas Joseph Richardson ,  Junyi Li

IPC: H04J3/06 ,  H04W56/00

CPC classification number: H04J3/0664 ,  H04J3/0641 ,  H04W56/00 ,  H04W56/0015 ,  H04W56/0035

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with enabling distributed frequency synchronization based on a fastest node clock rate. In one example, a first UE is equipped to determine that a fastest clock rate is faster than an internal clock rate of the first UE by more than a first positive offset, and adjust the internal clock rate based on the determined fastest clock rate. In an aspect, the fastest clock rate is associated with a second UE of one or more other UEs from which synchronization signals may be received. In another example, a UE is equipped to obtain GPS based timing information, adjust an internal clock rate based on the GPS based timing information, and transmit a synchronization signal at an artificially earlier time in comparison to a scheduled time of transmission associated with the adjusted internal clock rate.

Abstract translation: 提供一种用于无线通信的方法，装置和计算机程序产品，其结合基于最快节点时钟速率的分布式频率同步。 在一个示例中，第一UE被配备为确定最快的时钟速率比第一UE的内部时钟速率快多于第一正偏移，并且基于所确定的最快时钟速率来调整内部时钟速率。 在一个方面，最快的时钟速率与一个或多个其他UE的第二UE相关联，从该UE可接收同步信号。 在另一示例中，UE被配备以获得基于GPS的定时信息，基于基于GPS的定时信息来调整内部时钟速率，并且在与被调整的定时信息相关联的调度传输时间的情况下，在人为的较早时间发送同步信号 内部时钟速率。

公开(公告)号：US20150063343A1

公开(公告)日：2015-03-05

申请号：US14457889

申请日：2014-08-12

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Nilesh Nilkanth Khude ,  Saurabha Rangrao Tavildar

IPC: H04W56/00

CPC classification number: H04W56/0045 ,  H04W56/0015 ,  H04W56/002

Abstract: Methods, systems, and devices are described for synchronizing a user equipment (UE) in a device-to-device communications network. The UE may scan for a synchronization signal transmitted from another UE in the network. A synchronization frame including a plurality of slots to use may be identified based at least in part on a result of the scanning. The identified synchronization frame may be analyzed to select a slot to use from the plurality of slots of the synchronization frame. A synchronization signal may be transmitted using the identified synchronization frame and the selected slot.

Abstract translation: 描述了用于使设备到设备通信网络中的用户设备（UE）同步的方法，系统和设备。 UE可以扫描从网络中的另一个UE发送的同步信号。 可以至少部分地基于扫描的结果来识别包括要使用的多个时隙的同步帧。 可以分析所识别的同步帧以从同步帧的多个时隙中选择要使用的时隙。 可以使用所识别的同步帧和所选择的时隙来发送同步信号。

公开(公告)号：US20140256328A1

公开(公告)日：2014-09-11

申请号：US13787544

申请日：2013-03-06

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W36/00

CPC classification number: H04W36/0055 ,  H04B17/309 ,  H04B17/318 ,  H04L5/0051 ,  H04L5/0057 ,  H04W16/00 ,  H04W36/30 ,  H04W84/045

Abstract: Methods and apparatus that facilitate handover related measurements and decision making in a communications system including user equipment (UE) devices, a macro base station and femto base stations (femtocells) are described. In some embodiments a UE device transmits pilots along with identification information using UE device selected transmission resources from a set of recurring UE pilot transmission resources dedicated by a macro base station for UE pilot signal and related device information transmission purposes. Femto base stations measure the UE transmitted pilot signals and report the signal strength measurement results and corresponding device identifiers to a handoff decision control entity, e.g., an eNodeB or control node, which makes handover decisions. By relying on UE transmitted pilots measured by multiple base stations, e.g., femto base stations, the need for femto cells to transmit pilots can be reduced while well informed UE handoff decisions still being possible.

Abstract translation: 描述了在包括用户设备（UE）设备，宏基站和毫微微基站（毫微微小区）的通信系统中促进切换相关测量和决策的方法和装置。 在一些实施例中，UE设备使用UE设备选择的传输资源从用于UE导频信号的宏基站专用的一组循环UE导频传输资源和相关设备信息传输目的来发送导频。 毫微微基站测量UE发送的导频信号，并将信号强度测量结果和相应的设备标识符报告给切换决策控制实体，例如进行切换决定的eNodeB或控制节点。 通过依赖由多个基站（例如，毫微微基站）测量的UE发射的导频，可以减少对毫微微小区发送导频的需要，同时可以很好地告知UE切换决定仍然是可能的。

公开(公告)号：US20140226504A1

公开(公告)日：2014-08-14

申请号：US13767757

申请日：2013-02-14

Applicant: QUALCOMM INCORPORATED

Inventor： Saurabha Rangrao Tavildar ,  Junyi Li ,  Bilal Sadiq ,  Qing He

IPC: H04W72/08

CPC classification number: H04W72/082 ,  H04W16/14 ,  H04W36/20 ,  H04W36/24 ,  H04W36/36 ,  H04W72/042 ,  H04W72/1215 ,  H04W72/1226 ,  H04W72/1289

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus of a device-to-device (D2D) link receives from a base station an indication of an acceptable level of interference that the base station can tolerate on an uplink resource. The uplink resource is allocated to a user equipment (UE) for a wide area network (WAN) transmission. The acceptable level of interference is a level of interference that the base station can tolerate on the uplink resource while the base station receives the WAN transmission from the UE. The apparatus determines a level of interference to the UE's transmission at the base station and performs a D2D communication on the uplink resource allocated to the second UE for the WAN transmission if the determined level of interference is less than the acceptable level.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品。 设备到设备（D2D）链路的设备从基站接收基站可以在上行链路资源上容忍的可接受的干扰电平的指示。 将上行链路资源分配给用于广域网（WAN）传输的用户设备（UE）。 可接受的干扰水平是基站在接收到来自UE的WAN传输时在基站上容忍的干扰水平。 该装置确定在基站处的UE的传输的干扰级别，并且如果确定的干扰电平小于可接受的水平，则在分配给第二UE的上行链路资源上执行用于WAN传输的D2D通信。

公开(公告)号：US20220217622A1

公开(公告)日：2022-07-07

申请号：US17655734

申请日：2022-03-21

Applicant: QUALCOMM Incorporated

Inventor： Haris Zisimopoulos ,  Hong Cheng ,  Sudhir Kumar Baghel ,  Michaela Vanderveen ,  Shailesh Patil ,  Saurabha Rangrao Tavildar ,  Kapil Gulati ,  Bilal Sadiq

IPC: H04W48/16 ,  H04L12/18 ,  H04W8/00 ,  H04W88/04

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes configuring a relay selection rule; receiving at least one discovery message from each of a plurality of proximity services (ProSe) relay candidates providing access to a network; evaluating the received discovery messages with respect to the relay selection rule; selecting a first ProSe relay candidate from the plurality of ProSe relay candidates based at least in part on the evaluating; and connecting to the network via the first ProSe relay candidate. A method for wireless communication at a ProSe relay candidate includes receiving, from a network, a ProSe Relay Indication (PRI); broadcasting at least one discovery message that includes the PRI; and receiving a relay connection request from a UE based at least in part on a compliance of the at least one discovery message with a relay selection rule of the UE.

公开(公告)号：US11284337B2

公开(公告)日：2022-03-22

申请号：US15061092

申请日：2016-03-04

Applicant: QUALCOMM Incorporated

Inventor： Haris Zisimopoulos ,  Hong Cheng ,  Sudhir Kumar Baghel ,  Michaela Vanderveen ,  Shailesh Patil ,  Saurabha Rangrao Tavildar ,  Kapil Gulati ,  Bilal Sadiq

IPC: H04W48/16 ,  H04L12/18 ,  H04W8/00 ,  H04W88/04 ,  H04W4/06 ,  H04W48/08 ,  H04W24/10 ,  H04W76/40 ,  H04W76/14

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes configuring a relay selection rule; receiving at least one discovery message from each of a plurality of proximity services (ProSe) relay candidates providing access to a network; evaluating the received discovery messages with respect to the relay selection rule; selecting a first ProSe relay candidate from the plurality of ProSe relay candidates based at least in part on the evaluating; and connecting to the network via the first ProSe relay candidate. A method for wireless communication at a ProSe relay candidate includes receiving, from a network, a ProSe Relay Indication (PRI); broadcasting at least one discovery message that includes the PRI; and receiving a relay connection request from a UE based at least in part on a compliance of the at least one discovery message with a relay selection rule of the UE.

公开(公告)号：US11277235B2

公开(公告)日：2022-03-15

申请号：US15351164

申请日：2016-11-14

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Tao Luo ,  Tingfang Ji ,  Jing Jiang ,  Saurabha Rangrao Tavildar ,  Yang Yang ,  Jamie Menjay Lin ,  Joseph Binamira Soriaga

IPC: H04L5/00 ,  H04W72/04 ,  H04W88/08

Abstract: Techniques are described for wireless communication. One method includes identifying a transmission time interval (TTI)-level control region, where the cascaded control region includes a TTI-level common control region and a TTI-level UE-specific control region, and where the TTI-level common control region has a pointer to a location of the TTI-level UE-specific control region; and demodulating at least one of the TTI-level common control region and the TTI-level UE-specific control region. Some techniques enable control information in a first region to point to a second region that includes additional control information. Some techniques enable two-stages of control. Semi-persistent scheduling/prescheduling control may be configured to cause an entity to refrain from demodulating one of the stages of control.

公开(公告)号：US11153837B2

公开(公告)日：2021-10-19

申请号：US14790908

申请日：2015-07-02

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Saurabha Rangrao Tavildar ,  Peter Gaal

IPC: H04W56/00 ,  H04W76/14 ,  H04B7/185

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines that a first external timing source timing signal is available at a first UE. The apparatus also synchronizes the first UE using the first external timing source based timing signal when the first external timing source timing signal is available. Additionally, the apparatus transmits a synchronization signal indicating that the first UE is synchronized using an external timing source timing signal.