公开(公告)号：US20190182675A1

公开(公告)日：2019-06-13

申请号：US16214472

申请日：2018-12-10

Applicant: APPLE INC

Inventor： Tianyan PU ,  Farouk BELGHOUL ,  Wei ZENG ,  Wei ZHANG ,  Xiaowen WANG ,  Yang LI ,  Ping WANG ,  Haitong SUN ,  Beibei WANG ,  Yuchul KIM ,  Johnson O. SEBENI ,  Dawei ZHANG ,  Sami M. ALMALFOUH ,  Zhu Jl ,  Sunny ARORA

IPC: H04W16/14 ,  H04W74/08 ,  H04W72/04 ,  H04W24/08 ,  H04W24/10

Abstract: An evolved Node B (eNB) serves as a primary serving cell (PCell) providing a primary component carrier (PCC) in a licensed spectrum to a user equipment (UE) in a carrier aggregation (CA) scheme. A secondary component carrier (SCC) is provided in an unlicensed spectrum. The eNB monitors parameters of bandwidths in the unlicensed spectrum, when at least one of the parameters indicates a change in availability of a select one of the bandwidths, the eNB generates a control indicator defining the change in availability of the bandwidth and broadcasts the control indicator to the UE, wherein the control indicator affects a modification in a transceiver of the UE associated with the bandwidth.

公开(公告)号：US20160323930A1

公开(公告)日：2016-11-03

申请号：US15083142

申请日：2016-03-28

Applicant: Apple Inc.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Tahir SHAMIM

IPC: H04W76/04 ,  H04L5/14 ,  H04B17/336 ,  H04W52/02

CPC classification number: H04W76/048 ,  H04B17/336 ,  H04L5/0005 ,  H04L5/0007 ,  H04W52/02 ,  H04W52/0216 ,  H04W52/0245 ,  H04W76/28 ,  H04W84/042 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.

公开(公告)号：US20160286535A1

公开(公告)日：2016-09-29

申请号：US14846002

申请日：2015-09-04

Applicant: APPLE INC.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Yu-Lin WANG

IPC: H04W72/04 ,  H04L5/00 ,  H04L12/26

CPC classification number: H04L5/0007 ,  H04B17/309 ,  H04L5/0048 ,  H04L5/0053

Abstract: A user equipment and method performs an adaptive channel estimation. The method performed at a user equipment includes receiving physical downlink control channel (PDCCH) information for a subframe from a network, the subframe including reference symbols at predetermined times therein. If the PDCCH information does not include a downlink grant for the user equipment, a measured value of a network metric experienced by the user equipment is determined and compared to a threshold criteria. A first set of the reference symbols is used for channel estimation when the threshold value is satisfied and a second set of the reference symbols is used for channel estimation when the threshold is not satisfied, the first set of references symbols is a subset of the second set of the reference symbols. In another embodiment, a previously determined channel estimation at a previous subframe is used for the subframe when the threshold is satisfied.

Abstract translation: 用户设备和方法执行自适应信道估计。 在用户设备中执行的方法包括从网络接收子帧的物理下行链路控制信道（PDCCH）信息，该子帧包括在其中的预定时间的参考符号。 如果PDCCH信息不包括用户设备的下行链路许可，则确定用户设备经历的网络度量的测量值并将其与阈值标准进行比较。 当阈值满足时，将第一组参考符号用于信道估计，并且当阈值不满足时将第二组参考符号用于信道估计时，第一组参考符号是第二组参考符号的子集 一组参考符号。 在另一个实施例中，当满足阈值时，对于子帧使用先前子帧的先前确定的信道估计。

公开(公告)号：US20160234750A1

公开(公告)日：2016-08-11

申请号：US14871493

申请日：2015-09-30

Applicant: APPLE INC.

Inventor： Navid DAMJI ,  Shivesh MAKHARIA ,  Luciano M. VERGER ,  Samy KHAY-IBBAT ,  Johnson O. SEBENI ,  Sree Ram KODALI ,  Sreevalsan VALLATH

IPC: H04W36/30 ,  H04L1/18 ,  H04W72/04 ,  H04L1/00 ,  H04W72/08 ,  H04W52/36

CPC classification number: H04W36/30 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0036 ,  H04L1/1812 ,  H04L1/203 ,  H04W28/22 ,  H04W36/0022 ,  H04W36/14 ,  H04W72/1284 ,  H04W88/06

Abstract: Apparatus, system and methods for evaluating link quality within a cellular system. A user equipment (“UE”) is connected to a network, wherein the UE communicates data to the network on an uplink (“UL”) link. The UE determines a requested buffer size for a UL communication, determines a transport block size for the UL communication based on a primary set of allocation parameters, and compares the requested buffer size to the transport block size to determine if a data rate for the UL communication satisfies a threshold. When the data rate satisfies the threshold, the UE identifies the UL link as a good quality link and sends acceptable link quality feedback to the network. When the data rate does not satisfy the threshold, the UE performs a further action to test a quality of the UL link.

Abstract translation: 用于评估蜂窝系统内的链路质量的装置，系统和方法。 用户设备（“UE”）连接到网络，其中UE在上行链路（“UL”）链路上向网络传送数据。 UE确定用于UL通信的所请求的缓冲器大小，基于一组分配参数确定用于UL通信的传输块大小，并将所请求的缓冲器大小与传输块大小进行比较，以确定UL的数据速率 通信满足阈值。 当数据速率满足阈值时，UE将UL链路识别为良好的质量链路，并向网络发送可接受的链路质量反馈。 当数据速率不满足阈值时，UE执行进一步的动作来测试UL链路的质量。

公开(公告)号：US20150230206A1

公开(公告)日：2015-08-13

申请号：US14175502

申请日：2014-02-07

Applicant: Apple Inc.

Inventor： Tarik TABET ,  Navid DAMJI ,  Ming HU ,  Christian W. MUCKE ,  Vinay R. MAJJIGI ,  Syed A. MUJTABA ,  Johnson O. SEBENI

IPC: H04W72/02 ,  H04W74/02

CPC classification number: H04W72/02 ,  H04L5/0039 ,  H04L5/0041 ,  H04L25/00 ,  H04W52/00 ,  H04W52/245 ,  H04W52/346 ,  H04W52/365 ,  H04W52/42 ,  H04W72/1215 ,  H04W74/02 ,  H04W88/06

Abstract: Apparatus and methods for dynamically adjusting radio frequency circuitry in a wireless communication device are disclosed. The wireless communication device can receive downlink communication using carrier aggregation through a primary component carrier and a secondary component carrier. When carrier aggregation is not enabled, the wireless communication device adjusts the radio frequency circuitry based on default values. When carrier aggregation is enabled, the wireless communication device evaluates radio frequency conditions for the primary and secondary component carriers and adjusts the radio frequency circuitry based on whether uplink and/or downlink communication is power constrained. When uplink communication is power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the primary component carrier, and when uplink communication is not power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the combination of the primary and secondary component carriers used for carrier aggregation.

Abstract translation: 公开了一种在无线通信设备中动态调整射频电路的设备和方法。 无线通信设备可以通过主要分量载波和辅助分量载波来使用载波聚合来接收下行链路通信。 当未启用载波聚合时，无线通信设备将根据默认值调整射频电路。 当启用载波聚合时，无线通信设备评估主要和次要分量载波的射频条件，并且基于上行链路和/或下行链路通信是否受功率约束来调整射频电路。 当上行链路通信功率受限时，无线通信设备通过主要分量载波调整射频电路以获得最佳性能，并且当上行链路通信不受功率限制时，无线通信设备通过组合来调整射频电路以获得最佳性能 用于载波聚合的主要和次要分量载波。

公开(公告)号：US20210321265A1

公开(公告)日：2021-10-14

申请号：US17302146

申请日：2021-04-26

Applicant: Apple Inc.

Inventor： Tianyan PU ,  Farouk BELGHOUL ,  Wei ZENG ,  Wei ZHANG ,  Xiaowen WANG ,  Yang LI ,  Ping WANG ,  Haitong SUN ,  Beibei WANG ,  Yuchul KIM ,  Johnson O. SEBENI ,  Dawei ZHANG ,  Sami M. ALMALFOUH ,  Zhu JI ,  Sunny ARORA

IPC: H04W16/14 ,  H04W24/10 ,  H04W72/04 ,  H04W24/08 ,  H04W48/12

Abstract: An evolved Node B (eNB) serves as a primary serving cell (PCell) providing a primary component carrier (PCC) in a licensed spectrum to a user equipment (UE) in a carrier aggregation (CA) scheme. A secondary component carrier (SCC) is provided in an unlicensed spectrum. The eNB monitors parameters of bandwidths in the unlicensed spectrum, when at least one of the parameters indicates a change in availability of a select one of the bandwidths, the eNB generates a control indicator defining the change in availability of the bandwidth and broadcasts the control indicator to the UE, wherein the control indicator affects a modification in a transceiver of the UE associated with the bandwidth.

公开(公告)号：US20190036829A1

公开(公告)日：2019-01-31

申请号：US15757812

申请日：2015-09-07

Applicant: APPLE INC.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Xugang SONG ,  Yanxia WANG

IPC: H04L12/851 ,  H04W24/08 ,  H04L1/00 ,  H04B17/336 ,  H04B7/01 ,  H04W76/28

Abstract: A device, system, and method perform an adaptive link adaptation. The method, at a user equipment (UE) connected to a Long Term Evolution (LTE) network via an evolved Node B (eNB), includes determining a type of wireless traffic being utilized by the UE based upon at least one application executed on the UE, the wireless traffic being one of a data only, a voice only, or a combination thereof. The method includes determining a block error rate (BLER) target value to be used in a channel state feedback operation associated with a link adaptation operation for a connection between the UE and the eNB.

公开(公告)号：US20170324588A1

公开(公告)日：2017-11-09

申请号：US15601265

申请日：2017-05-22

Applicant: APPLE INC.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Navid DAMJI

IPC: H04L25/02 ,  H04W4/06 ,  H04L27/26 ,  H04L5/00 ,  H04L12/18

CPC classification number: H04L25/0224 ,  H04L5/0048 ,  H04L12/189 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0232 ,  H04L27/2601 ,  H04W4/06

Abstract: A method to be performed at a station configured to connect to a Long Term Evolution radio access network (LTE-RAN) to utilize enhanced Multimedia Broadcast Multicast Services using a Multicast-Broadcast Single-Frequency Network (MBSFN). The method including receiving a MBSFN subframe having a MBSFN subframe structure including a plurality of Orthogonal Frequency-Division Multiplexing (OFDM) symbols, a first one of the OFDM symbols having a first reference symbol inserted therein, a second one of the OFDM symbols having a second reference symbol inserted therein, determining a rate of change of channel conditions being experienced by the station and performing a non-destaggered channel estimation when the rate of change of channel conditions is greater than a predetermined threshold, the non-destaggered channel estimation using a first Channel Impulse Response (CIR) at the first OFDM symbol and a second CIR at the second OFDM symbol.

公开(公告)号：US20140220916A1

公开(公告)日：2014-08-07

申请号：US14249263

申请日：2014-04-09

Applicant: Apple Inc.

Inventor： Syed A. MUJTABA ,  Xiaowen WANG ,  Young Jae KIM ,  Vinay R. MAJJIGI ,  Johnson O. SEBENI ,  Tahir SHAMIM ,  Karthik ANANTHARAMAN ,  Kee-Bong SONG ,  Romain TRILLING

IPC: H04B7/08 ,  H04L12/26

CPC classification number: H04B7/082 ,  H04B7/0817 ,  H04B7/0871 ,  H04L43/0823

Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.

Abstract translation: 移动无线设备基于下行链路信号质量，页面指示符和寻呼消息来适应不连续接收期间的接收分集。 当下行链路信号质量超过预定阈值时，移动无线设备通过初始天线解码页面指示符信道，否则，通过初始天线对寻呼信道进行解码，而不对页面指示符信道进行解码。 当页面指示符被解码为擦除时，移动无线设备切换到通过替代天线解码寻呼信道。 当通过单个天线接收的寻呼消息用错误的错误校验码进行解码时，移动无线设备能够通过多个天线进行接收分集以用于后续解码。 基于跟踪多个连续的错误检查代码故障和成功，移动无线设备在单天线接收和多天线接收之间切换。

公开(公告)号：US20140106810A1

公开(公告)日：2014-04-17

申请号：US14047772

申请日：2013-10-07

Applicant: APPLE INC.

Inventor： Venkatasubramanian RAMASAMY ,  Giri Prassad DEIVASIGAMANI ,  Srinivasan VASUDEVAN ,  Mohit NARANG ,  Longda XING ,  Johnson O. SEBENI

IPC: H04W52/14 ,  H04W52/24

CPC classification number: H04W52/146 ,  H04W52/10 ,  H04W52/22 ,  H04W52/241 ,  H04W52/265 ,  H04W52/283 ,  H04W52/325 ,  H04W52/346

Abstract: A method and apparatus to improve the robustness of a wireless communication link between a base station and a mobile communication device. The method increases power selectively on portions of an uplink communication signal transmitted from the mobile communication device to the base station. The method monitors a quality metric value at the mobile communication device and sets the transmit power level of the first portion of an uplink communication signal to the first power level, if the monitored quality metric value is in a first range of quality values, or sets the transmit power level of the first portion of the uplink communication signal to a second power level, if the monitored quality metric value is in a second range of quality values. The first portion of the uplink communication signal includes control signals used by a base station to maintain connection of the wireless communication link.

Abstract translation: 一种用于改善基站和移动通信设备之间的无线通信链路的鲁棒性的方法和装置。 该方法在从移动通信设备发送到基站的上行链路通信信号的部分上有选择地增加功率。 该方法监视移动通信设备处的质量度量值，并将上行链路通信信号的第一部分的发射功率电平设置为第一功率电平，如果所监视的质量度量值在质量值的第一范围内，或者设置 如果所监视的质量度量值处于质量值的第二范围，则上行链路通信信号的第一部分的发射功率电平达到第二功率电平。 上行链路通信信号的第一部分包括由基站使用以维持无线通信链路的连接的控制信号。