公开(公告)号：US10560897B2

公开(公告)日：2020-02-11

申请号：US15992826

申请日：2018-05-30

Applicant: APPLE INC.

Inventor： Jia Tang ,  Zhu Ji ,  Yu-Lin Wang ,  Wei Zhang

IPC: H04W52/02 ,  H04W72/12

Abstract: A method and user equipment for transmission slot blank. The method includes, at the user equipment (“UE”), establishing a voice call, determining whether the voice call currently comprises a silence period, blanking at least two slots of a control frame according to a predetermined pattern, wherein the predetermined pattern includes at least one slot that is not blanked between the at least two slots that are blanked, and transmitting the control frame.

公开(公告)号：US20190335535A1

公开(公告)日：2019-10-31

申请号：US16391559

申请日：2019-04-23

Applicant: Apple Inc.

Inventor： Yang Li ,  Li Su ,  Zhu Ji ,  Tianyan Pu

IPC: H04W88/04 ,  H04W88/02 ,  H04W56/00 ,  H04W72/04 ,  H04W72/02 ,  H04W8/00 ,  H04W76/11 ,  H04W4/70

Abstract: This disclosure relates to techniques for supporting message mapping via time and/or frequency indexing. For example, these techniques may be applied to device-to-device wireless communication. For example, device to device discovery may use message mapping via frequency indexing. A portion of the payload of a message, such as a discovery message, may be offloaded to a frequency and/or time index. A receiving device may determine the offloaded portion of the payload based on the frequency and/or time (e.g., subcarrier and/or slot) used to transmit the message.

公开(公告)号：US10341956B2

公开(公告)日：2019-07-02

申请号：US16119801

申请日：2018-08-31

Applicant: Apple Inc.

Inventor： Tianyan Pu ,  Sai Sravan Bharadwaj Karri ,  Wei Zhang ,  Swaminathan Balakrishnan ,  Xiantao Sun ,  Beibei Wang ,  Manish G. Vemulapalli ,  Jia Tang ,  Sami M. Almalfouh ,  Zhu Ji ,  Sachin J. Sane

IPC: H04W52/02 ,  H04B7/0456 ,  H04W88/06

Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on control information, a device may determine whether the current number of active receiver chains can be reduced while maintaining a target achievable code rate for a period of data reception associated with the control information. Additionally, the device may generate and use a lookup table to determine whether to depower receiver chains, and which receiver chains to depower.

公开(公告)号：US20190181942A1

公开(公告)日：2019-06-13

申请号：US15994708

申请日：2018-05-31

Applicant: Apple Inc.

Inventor： Jia Tang ,  Zhu Ji ,  Yang Li ,  Johnson O. Sebeni ,  Yu-Lin Wang ,  Sulabh Khandelwal ,  Beibei Wang ,  Zheng Zhang

IPC: H04B7/08 ,  H04W76/28 ,  H04L5/00 ,  H04W52/24

CPC classification number: H04B7/0825 ,  H04B17/318 ,  H04B17/382 ,  H04L5/0057 ,  H04W52/24 ,  H04W76/28

Abstract: Adaptive multiplexing and transmit/receive diversity. A wireless device may include multiple antennas. A first set of antennas may be used for communication. One or more trigger conditions may be determined, and additional antennas may be activated for measurement. Based on the measurement(s), a second set of antennas may be selected and used for communication.

公开(公告)号：US20190045400A1

公开(公告)日：2019-02-07

申请号：US16055763

申请日：2018-08-06

Applicant: Apple Inc.

Inventor： Yang Li ,  Zhu Ji ,  Johnson O. Sebeni

IPC: H04W28/20 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00 ,  H04W24/10 ,  H04B17/309

Abstract: A method performed by a user equipment (UE) connected to a network that utilizes a first bandwidth for a plurality of network operations and assigns the UE a second bandwidth, within the first bandwidth, to utilize for communication with the network. The method including determining a third bandwidth within the first bandwidth that is narrower than the first bandwidth and wider than the second bandwidth and includes the second bandwidth, monitoring the third bandwidth for at least one reference signal transmitted by the network, and determining at least one value that corresponds to the connection between the UE and the network based on the at least one reference signal.

公开(公告)号：US10178615B2

公开(公告)日：2019-01-08

申请号：US15178897

申请日：2016-06-10

Applicant: APPLE INC.

Inventor： Beibei Wang ,  Zhu Ji ,  Johnson O. Sebeni

IPC: H04W52/02 ,  H04J11/00 ,  H04W72/04 ,  H04W72/14 ,  H04W40/00 ,  H04L12/26 ,  H04L1/18 ,  H04W76/28 ,  H04W88/02 ,  H04W88/08

Abstract: A method and device for scheduling SR transmissions for a user equipment (UE) associated with an evolved Node B (eNB) of a Long Term Evolution (LTE) network. The method includes determining an SR is to be transmitted to the LTE network, determining an uplink grant behavior of the eNB, when the uplink grant behavior of the eNB indicates that previous uplink grants satisfy a threshold of previous grants occurring in onDurations of the cycle of a C-DRX functionality, selecting one of the at least one SR opportunity that follows a next onDuration relative to when the indication is received and scheduling the SR in the one of the at least one SR opportunity that follows the next onDuration. The method further including determining an uplink grant turnaround time associated with the eNB, and selecting one of the at least one SR opportunity based on the uplink grant turnaround time.

公开(公告)号：US20180359760A1

公开(公告)日：2018-12-13

申请号：US15941073

申请日：2018-03-30

Applicant: Apple Inc.

Inventor： Li Su ,  Yang Li ,  Zhu Ji

IPC: H04W72/08 ,  H04W72/12 ,  H04W72/04 ,  H04B1/715

CPC classification number: H04W72/082 ,  H04B1/713 ,  H04B1/715 ,  H04W72/0453 ,  H04W72/1215 ,  H04W88/06

Abstract: This disclosure relates to techniques for wireless devices to improve wireless communication technology coexistence characteristics using narrow band use awareness in a wireless communication system. A wireless device may attach to a serving cell according to a first radio access technology. A frequency range in active use by the wireless device for communication according to the first radio access technology may be determined. The frequency range may include less bandwidth than the system bandwidth of the serving cell. An indication of the frequency range may be provided from a portion of the wireless device implementing the first radio access technology to a portion of the wireless device implementing a second radio access technology. It may be determined whether to modify operation of the wireless device with respect to the second radio access technology based at least in part on the indication of the frequency range.

公开(公告)号：US09998934B2

公开(公告)日：2018-06-12

申请号：US14290471

申请日：2014-05-29

Applicant: APPLE INC.

Inventor： Wanping Zhang ,  Zhu Ji ,  Qiang Miao ,  Johnson O. Sebeni ,  Joshua Zhang

IPC: H04W24/08 ,  H04W24/10 ,  H04W24/02 ,  H04W76/04

CPC classification number: H04W24/08 ,  H04W24/02 ,  H04W24/10 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/24

Abstract: A method to be performed by a wireless station having a wireless transceiver configured to establish a connection to a network, a processor and a non-transitory computer readable storage medium. The method includes receiving information during a first reception segment of a discontinuous reception cycle, wherein the discontinuous reception cycle includes the first reception segment and a first idle segment, performing a first measurement that begins during the first reception segment and performing a second measurement, wherein the second measurement begins prior to an end of the first measurement.

公开(公告)号：US09794024B2

公开(公告)日：2017-10-17

申请号：US14075816

申请日：2013-11-08

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson Sebeni

IPC: H04L1/00 ,  H04W24/10 ,  H04L25/02 ,  H04B7/06

CPC classification number: H04L1/0023 ,  H04B7/065 ,  H04L1/0026 ,  H04L25/0204 ,  H04L25/0222 ,  H04L25/0224 ,  H04W24/10

Abstract: Aspects of the present invention provide apparatuses and methods for adaptive channel state feedback (CSF) estimation techniques. Downlink transmissions can be received at a mobile device. The downlink transmissions can be received after the mobile device has entered a power saving mode of operation. The downlink transmission received can be a discontinuous downlink subframe and can include one or more pilot symbols. A channel variation factor of the transmission channel can be determined based on the received downlink transmission. Based on the amount of variation of the transmission channel, either an earlier-received or a later-received pilot symbol can be used for CSF estimation. Further, either higher or lower weighted filter coefficients can be selected for use in CSF estimation based on the amount of variation of the transmission channel.

公开(公告)号：US09577846B2

公开(公告)日：2017-02-21

申请号：US14194496

申请日：2014-02-28

Applicant: Apple Inc.

Inventor： Navid Damji ,  Zhu Ji ,  Johnson O. Sebeni ,  Gaurav Nukala ,  Srinivasan Vasudevan

IPC: H04B17/00 ,  H04W4/06 ,  H04L25/02 ,  H04B17/309

CPC classification number: H04L25/0226 ,  H04B17/309 ,  H04L25/0204 ,  H04W4/06

Abstract: Apparatus and methods for channel estimation in a Multimedia Broadcast Multicast Service (MBMS) Single Frequency Network (MBSFN) are disclosed. A representative method includes a wireless communication device receiving multiple frames, each frame including multiple subframes, each subframe including multiple symbols. The wireless communication device determines whether subframes include MBMS data or not. For subframes that include MBMS data, the wireless communication device excludes all or certain symbols of the subframes that include MBMS data from a channel estimation process. The wireless communication device determines whether the subframes include MBMS data based at least in part on a channel impulse response and/or a channel energy response for one or more symbols of the subframes.

Abstract translation: 公开了多媒体广播组播业务（MBMS）单频网（MBSFN）中信道估计的装置和方法。 代表性的方法包括接收多个帧的无线通信设备，每个帧包括多个子帧，每个子帧包括多个符号。 无线通信设备确定子帧是否包括MBMS数据。 对于包括MBMS数据的子帧，无线通信设备从信道估计处理中排除包括MBMS数据的子帧的全部或某些符号。 所述无线通信设备至少部分地基于所述子帧的一个或多个符号的信道脉冲响应和/或信道能量响应来确定所述子帧是否包括MBMS数据。