公开(公告)号：US09500628B2

公开(公告)日：2016-11-22

申请号：US14484785

申请日：2014-09-12

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson O. Sebeni

IPC: H04W4/00 ,  G01N29/36 ,  H04W52/02 ,  H04W4/02 ,  G01N29/04 ,  G01N29/34

CPC classification number: G01N29/36 ,  G01N29/04 ,  G01N29/34 ,  H04B7/0632 ,  H04B7/0639 ,  H04W4/027 ,  H04W52/0216 ,  H04W52/0251 ,  H04W72/082 ,  H04W72/12 ,  H04W76/28 ,  H04W88/02 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/24

Abstract: Providing adaptive channel state feedback (CSF) reports in discontinuous reception (DRX) scenarios in a power-efficient manner. The described algorithm may be able to make adaptive decisions to carry over the CSF from previous DRX cycles based on channel conditions, DRX cycle length, and/or the requirements of CSF reporting for current DRX cycle. The proposed approach can allow for more efficient power consumption related to CSF reports in DRX scenarios where new CSF reports have little or no impact to throughput.

Abstract translation: 以功率有效的方式在不连续接收（DRX）场景中提供自适应信道状态反馈（CSF）报告。 所描述的算法可能能够基于信道条件，DRX周期长度和/或针对当前DRX周期的CSF报告的要求，进行自适应决定以从先前的DRX周期传送CSF。 所提出的方法可以允许在DRX情景中与CSF报告相关的更有效的功率消耗，其中新的CSF报告对吞吐量几乎没有或没有影响。

公开(公告)号：US09295063B2

公开(公告)日：2016-03-22

申请号：US14753388

申请日：2015-06-29

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson O. Sebeni

IPC: H04W72/00 ,  H04W72/04 ,  H04B7/04 ,  H04W72/12 ,  H04L5/00

CPC classification number: H04W72/048 ,  H04B7/0413 ,  H04L5/0046 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0078 ,  H04L5/0091 ,  H04W72/1289

Abstract: Adaptive generation of channel state feedback (CSF) based on base station CSF scheduling. CSF report scheduling information may be received. CSF metrics may be generated based at least in part on the CSF report scheduling information. A CSF report including the CSF metrics may be transmitted to the base station. Periodicity of CSF report scheduling or other CSF report scheduling factors may be taken into consideration in generation of the CSF metrics.

公开(公告)号：US20160029314A1

公开(公告)日：2016-01-28

申请号：US14872257

申请日：2015-10-01

Applicant: Apple Inc.

Inventor： Navid Damji ,  Zhu Ji ,  Johnson Sebeni ,  Jason Shi ,  Li Su

IPC: H04W52/02 ,  H04W36/00 ,  H04B17/309 ,  H04W76/04

CPC classification number: H04W52/0225 ,  H04B17/309 ,  H04W36/0083 ,  H04W36/0088 ,  H04W52/0229 ,  H04W52/0245 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for adaptively adjusting temporal parameters (e.g., neighbor cell search durations). In one embodiment, neighbor cell search durations during discontinuous reception are based on a physical channel metric indicating signal strength and quality (e.g. Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Reference Signal Receive Quality (RSRQ), etc.) of a cell. In a second embodiment, neighbor cell search durations are based on a multitude of physical layer metrics from one or more cells. In one variant, the multitude of physical layer metrics may include signal strength and quality metrics from the serving base station as well as signal strength and quality indicators from neighbor cells derived from the cells respective synchronization sequences.

Abstract translation: 用于自适应地调整时间参数（例如，相邻小区搜索持续时间）的方法和装置。 在一个实施例中，不连续接收期间的相邻小区搜索持续时间是基于指示信号强度和质量的物理信道度量（例如参考信号接收功率（RSRP），接收信号强度指示（RSSI），参考信号接收质量（RSRQ）等） 。）细胞。 在第二实施例中，相邻小区搜索持续时间基于来自一个或多个小区的多个物理层度量。 在一个变型中，多个物理层度量可以包括来自服务基站的信号强度和质量度量以及来自从小区相应的同步序列导出的相邻小区的信号强度和质量指示符。

公开(公告)号：US09237602B2

公开(公告)日：2016-01-12

申请号：US13689568

申请日：2012-11-29

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson O. Sebeni

IPC: H04W52/02 ,  H04W88/02 ,  H04W76/04 ,  H04W72/08

CPC classification number: G01N29/36 ,  G01N29/04 ,  G01N29/34 ,  H04B7/0632 ,  H04B7/0639 ,  H04W4/027 ,  H04W52/0216 ,  H04W52/0251 ,  H04W72/082 ,  H04W72/12 ,  H04W76/28 ,  H04W88/02 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/24

Abstract: Providing adaptive channel state feedback (CSF) reports in discontinuous reception (DRX) scenarios in a power-efficient manner. The described algorithm may be able to make adaptive decisions to carry over the CSF from previous DRX cycles based on a comparison between an offset at which CSF values are stable and an offset at which a CSF report is to be sent to a base station. If the CSF values are not stable by the time the CSF report is to be sent, a CSF report from a prior DRX cycle may be used. Alternatively, if the CSF value are stable by the time the CSF report is to be sent, a determination may be made to either generate a new CSF report or use a prior CSF report. The latter determination may be made based on various criteria, including channel conditions and DRX cycle length.

Abstract translation: 以功率有效的方式在不连续接收（DRX）场景中提供自适应信道状态反馈（CSF）报告。 所描述的算法可能能够基于在CSF值稳定的偏移与要向基站发送CSF报告的偏移之间的比较，进行来自先前DRX周期的CSF的自适应决定。 如果CSF报告发送时CSF值不稳定，则可以使用来自先前的DRX周期的CSF报告。 或者，如果CSF报告发送时CSF值稳定，则可以确定生成新的CSF报告或使用先前的CSF报告。 可以基于包括信道条件和DRX周期长度的各种标准来进行后一种确定。

公开(公告)号：US20150263830A1

公开(公告)日：2015-09-17

申请号：US14503217

申请日：2014-09-30

Applicant: APPLE INC.

Inventor： Si Li ,  Zhu Ji ,  Srinivasan Vasudevan

IPC: H04L5/00

CPC classification number: H04L1/0015 ,  H04L1/0003 ,  H04L2001/0098

Abstract: A wireless communication system is presented for adaptive uplink (UL) link adaptation (LA). The adaptive UL LA can include multiple outer loops, for which multiple block error rate (BLER) filtering is performed. Each of the multiple BLER filtering can be performed on groups or sub-groups of subframes, in which each group has the same or similar coding characteristics. For example, one group in TD-LTE could be subframes with sounding reference signal (SRS) and another group could be subframes without SRS. Each of the multiple BLER filtering can use the same or different BLER algorithm, BLER target and/or BLER parameters.

Abstract translation: 提出了一种用于自适应上行链路（UL）链路自适应（LA）的无线通信系统。 自适应UL LA可以包括多个外部循环，对其进行多个块错误率（BLER）滤波。 可以对子帧的子组或子组执行多个BLER滤波中的每一个，其中每个组具有相同或相似的编码特性。 例如，TD-LTE中的一个组可以是具有探测参考信号（SRS）的子帧，另一组可以是没有SRS的子帧。 多个BLER滤波器中的每一个可以使用相同或不同的BLER算法，BLER目标和/或BLER参数。

公开(公告)号：US20140241232A1

公开(公告)日：2014-08-28

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: H04L25/02 ,  H04W4/06

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。

公开(公告)号：US20140133329A1

公开(公告)日：2014-05-15

申请号：US14075816

申请日：2013-11-08

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson Sebeni

IPC: H04W24/00

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.

Abstract translation: 本发明的方面提供了用于自适应信道状态反馈（CSF）估计技术的装置和方法。 可以在移动设备处接收下行传输。 在移动设备进入省电操作模式之后，可以接收下行链路传输。 接收到的下行链路传输可以是不连续的下行链路子帧，并且可以包括一个或多个导频符号。 可以基于接收到的下行链路传输来确定传输信道的信道变化因子。 基于传输信道的变化量，先前接收的或稍后接收的导频符号可用于CSF估计。 此外，基于传输信道的变化量，可以选择较高或较低加权滤波器系数用于CSF估计。

公开(公告)号：US20240314688A1

公开(公告)日：2024-09-19

申请号：US18679032

申请日：2024-05-30

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Wei Zhang ,  Sami M. Almalfouh ,  Junsung Lim ,  Haitong Sun ,  Wei Zeng ,  Dawei Zhang ,  Zhu Ji ,  Yang Li ,  Johnson O. Sebeni

IPC: H04W52/02 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W52/0216 ,  H04W72/0446 ,  H04W72/23

Abstract: Apparatuses, systems, and methods for a wireless device to perform a method including a user equipment device (UE) exchanging communications with a base station to determine one or more scheduling profiles, such as one or more scheduling-power profiles, where a scheduling-power profile may specify one or more parameters associated with UE communication behavior, e.g., one or more constraints on UE communication behavior and/or slot scheduling of UE communications. In addition, the method may include the UE receiving a slot configuration schedule from the base station. The slot configuration schedule may be based on at least one scheduling-power profile of the one or more scheduling-power profiles. Further, the method may include the UE performing communications with the base station based on the at least one scheduling-power profile.

公开(公告)号：US12063598B2

公开(公告)日：2024-08-13

申请号：US16582563

申请日：2019-09-25

Applicant: Apple Inc.

Inventor： Jia Tang ,  Haitong Sun ,  Dawei Zhang ,  Yuchul Kim ,  Zhu Ji ,  Wei Zeng ,  Wei Zhang ,  Ping Wang ,  Sreevalsan Vallath

IPC: H04W52/02 ,  H04W72/0446 ,  H04W88/02

CPC classification number: H04W52/0235 ,  H04W72/0446 ,  H04W88/02

Abstract: A device may obtain, through wireless signaling from a network, a time-domain wireless-resource allocation (TWRA) pattern allocated to the device by the network and corresponding to a future time interval (TTI) for which the device has not yet decoded corresponding control information. This enables the device to conduct wireless communications during the TTI using resources allocated according to the obtained TWRA pattern, without first having to decode control information to identify the TWRA pattern. The device may obtain the TWRA pattern by obtaining an indication from the network that the TWRA pattern remains associated with future wireless communications of the device until indicated otherwise by the network, and/or by transmitting to the network an indication of preferred parameters associated with the future wireless communications and the TWRA pattern, and/or by transmitting to the network a request to have the network change from a different TWRA pattern to the TWRA pattern.

公开(公告)号：US11690129B2

公开(公告)日：2023-06-27

申请号：US17069385

申请日：2020-10-13

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Yuchul Kim ,  Junsung Lim ,  Haitong Sun ,  Wei Zeng ,  Sami M. Almalfouh ,  Yang Li ,  Zhu Ji ,  Dawei Zhang ,  Johnson O. Sebeni

IPC: H04W76/28 ,  H04W72/0453 ,  H04W24/10 ,  H04W76/25 ,  H04W52/02 ,  H04W72/23

CPC classification number: H04W76/28 ,  H04W24/10 ,  H04W52/0216 ,  H04W72/0453 ,  H04W72/23 ,  H04W76/25

Abstract: Apparatuses, systems, and methods for a base station to perform a method construct dynamic hierarchical sub-configurations of bandwidth parts (BWPs) for use in a connected mode discontinuous reception (CDRX) communication session with a user equipment (UE) device. The base station may configure a first BWP at a baseband frequency associated with the CDRX communication session as a default BWP, a second BWP with a wider bandwidth than the first BWP as a transmission BWP, and one or more third BWPs as resting BWPs. The transmission BWP and the one or more resting BWPs may be configured to periodically override the default BWP as the active BWP for a predetermined number of CDRX cycles. The transmission BWP may be utilized, when activated to perform data transmission by UE device, and the one or more resting BWPs may be utilized, when activated, for performing channel measurements.