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公开(公告)号：US20190141633A1
公开(公告)日：2019-05-09
申请号：US16142870
申请日：2018-09-26
Applicant: Apple Inc.
Inventor： Junsung Lim , Youngjae Kim , Johnson O. Sebeni
Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on received control information, a device may determine a depowering time. For example, the device may determine a minimum number of symbols of the payload channel that will provide an effective spectral efficiency less than a supportable spectral efficiency of the payload channel. The depowering time may be determined as a time upon receipt of the determined minimum number of symbols. The device may determine whether to perform a depowering procedure, based upon the determined depowering time. In response to determining to perform the depowering procedure, the device may depower an RF receiver of the device at the depowering time, wherein the depowering time is prior to the end of the payload channel. The device may decode the payload channel based on a portion of the payload channel received by the RF receiver.
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公开(公告)号：US09560598B2
公开(公告)日：2017-01-31
申请号：US14018179
申请日：2013-09-04
Applicant: Apple Inc.
Inventor： Syed A. Mujtaba , Kee-Bong Song , Youngjae Kim
CPC classification number: H04W52/028 , H04W52/0245 , H04W52/241 , H04W52/243 , Y02D70/00 , Y02D70/1242 , Y02D70/1244 , Y02D70/1262 , Y02D70/142 , Y02D70/144
Abstract: In order to reduce power consumption of an electronic device during wireless communication, the electronic device may transition between a baseline (simple) receiver and a higher-power advanced receiver based on network conditions and/or environmental conditions. For example, the transition to the advanced receiver may occur when it offers improved communication performance over the baseline receiver, such as when there is significant interference and a high data rate, or when there is significant interference and a signal-to-noise ratio (SNR) is low. Similarly, the transition to the baseline receiver may occur when the capabilities of the advanced receiver are not needed, such as when there is less interference, or when the data rate is lower and the SNR is high. In this way, the electronic device can avoid the added power consumption associated with the advanced receiver except where the communication performance offered by the advanced receiver is needed.
Abstract translation: 为了在无线通信期间降低电子设备的功耗，电子设备可以基于网络条件和/或环境条件在基线（简单）接收机和较高功率的高级接收机之间转换。 例如，当高级接收机提供比基线接收机更好的通信性能时，例如当存在显着干扰和高数据速率时，或者当存在显着的干扰和信噪比（例如， SNR）低。 类似地，当不需要高级接收机的能力时，例如当干扰较小或数据速率较低且SNR高时，可能会发生向基线接收机的转换。 以这种方式，除了需要高级接收机提供的通信性能之外，电子设备可以避免与高级接收机相关联的附加功率消耗。
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公开(公告)号：US09319952B2
公开(公告)日：2016-04-19
申请号：US13631640
申请日：2012-09-28
Applicant: Apple Inc.
Inventor： Wen Zhao , Xiaowen Wang , Vinay Majjigi , Paul Flynn , Kee-Bong Song , Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba , Christian Mucke
CPC classification number: H04W36/14 , H04W56/0045 , H04W76/16 , H04W76/25 , H04W76/27
Abstract: Methods and apparatus for synchronizing operational state during hybrid network operation. In one embodiment, the various access technologies that makeup the hybrid network not fully synchronized. Thus, a wireless device operating in a mixed mode must be capable of managing synchronization across multiple access technologies. The wireless device is configured to estimate an expected “tune-away” period when disengaging with a one access technology to address events (for example, link maintenance, calls, data, and the like) or perform monitoring on a second access technology. The estimate is then used by the device to adjust its operational parameters on the technology from which it is tuning away. This ensures smooth switching away from and back to the various network technologies.
Abstract translation: 混合网络运行期间同步运行状态的方法和装置。 在一个实施例中，组合混合网络的各种接入技术未完全同步。 因此，以混合模式操作的无线设备必须能够跨多个接入技术来管理同步。 无线设备被配置为在使用一种接入技术来解决事件（例如，链路维护，呼叫，数据等）或在第二接入技术上执行监控时，估计预期的“调离”周期。 然后，设备使用该估计来调整其调谐技术的操作参数。 这确保了平滑地切换远离各种网络技术。
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公开(公告)号：US09173126B2
公开(公告)日：2015-10-27
申请号：US14568631
申请日：2014-12-12
Applicant: Apple Inc.
Inventor： Tarik Tabet , Navid Damji , Kee-bong Song , Syed Aon Mujtaba , Youngjae Kim , Johnson O. Sebeni , Yuchul Kim
CPC classification number: H04W24/10 , H04L1/0003 , H04L1/0026 , H04L43/0823 , H04L47/10 , H04W72/085 , H04W72/1231 , H04W72/1284
Abstract: Manipulating modulation and coding scheme (MCS) allocation after a communication interruption. A UE device may resume communications with a BS after a communication interruption. Channel quality information may be generated and transmitted to the BS. The channel quality information may be based on channel quality measurements, and may also be based on an offset configured manipulate an MCS allocation by the BS based on determining that the interruption to communication between the UE and the BS has occurred.
Abstract translation: 在通信中断后操纵调制和编码方案（MCS）分配。 在通信中断之后，UE设备可以恢复与BS的通信。 可以生成信道质量信息并将其发送到BS。 信道质量信息可以基于信道质量测量，并且还可以基于配置来基于BS来基于确定UE和BS之间的通信的中断已经发生而由BS操纵MCS分配的偏移。
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25.发明申请公开(公告)号：US20150079917A1
公开(公告)日：2015-03-19
申请号：US14551733
申请日：2014-11-24
Applicant: Apple Inc.
Inventor： Syed Aon MUJTABA , Xiaowen Wang , Tarik Tabet , Kee-Bont Song , Youngjae Kim , Yuchul Kim
IPC: H04B7/08
CPC classification number: H04B7/0814 , H04B7/0817 , H04B7/0871 , H04W52/0209 , Y02D70/1262 , Y02D70/444
Abstract: Apparatus and methods for implementing “intelligent” receive diversity management in e.g., a mobile device. In one implementation, the mobile device includes an LTE-enabled UE, and the intelligent diversity management includes selectively disabling receive diversity (RxD) in that device upon meeting a plurality of criteria including (i) a capacity criterion, and (ii) a connectivity criterion. In one variant, the capacity criterion includes ensuring that an achievable data rate associated with a single Rx (receive) chain is comparable to that with RxD.
Abstract translation: 在例如移动设备中实现“智能”接收分集管理的装置和方法。 在一个实现中，移动设备包括启用LTE的UE，并且智能分集管理包括在满足多个标准时选择性地禁用该设备中的接收分集（RxD），包括（i）容量标准，和（ii）连接 标准。 在一个变型中，容量标准包括确保与单个Rx（接收）链相关联的可实现的数据速率与RxD的数据速率相当。
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Patent Agency Ranking
公开(公告)号：US10952144B2
公开(公告)日：2021-03-16
申请号：US16142870
申请日：2018-09-26
Applicant: Apple Inc.
Inventor： Junsung Lim , Youngjae Kim , Johnson O. Sebeni
Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on received control information, a device may determine a depowering time. For example, the device may determine a minimum number of symbols of the payload channel that will provide an effective spectral efficiency less than a supportable spectral efficiency of the payload channel. The depowering time may be determined as a time upon receipt of the determined minimum number of symbols. The device may determine whether to perform a depowering procedure, based upon the determined depowering time. In response to determining to perform the depowering procedure, the device may depower an RF receiver of the device at the depowering time, wherein the depowering time is prior to the end of the payload channel. The device may decode the payload channel based on a portion of the payload channel received by the RF receiver.
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公开(公告)号：US10588156B2
公开(公告)日：2020-03-10
申请号：US15989864
申请日：2018-05-25
Applicant: Apple Inc.
Inventor： Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba
Abstract: Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device.
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公开(公告)号：US20180279381A1
公开(公告)日：2018-09-27
申请号：US15989864
申请日：2018-05-25
Applicant: Apple Inc.
Inventor： Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba
IPC: H04W74/08
Abstract: Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device.
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公开(公告)号：US09832788B2
公开(公告)日：2017-11-28
申请号：US13924067
申请日：2013-06-21
Applicant: Apple Inc.
Inventor： Youngjae Kim , Kee-Bong Song , Syed Aon Mujtaba
CPC classification number: H04W72/1278 , H04W52/0216 , H04W52/0225 , H04W52/0274 , H04W72/12 , H04W88/06 , Y02D70/1222 , Y02D70/1242 , Y02D70/1244 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146
Abstract: Mechanisms for operating a wireless user equipment device, to determine the state of data scheduling activity. Such activity state (and other information such as measurements of signal interference and/or channel condition) may be used to dynamically control the selection of a high-power high-performance receiver vs. a low-power basic receiver. A first mechanism involves transitioning to a high activity state and starting a timer upon each occurrence of scheduled subframe. A transition to the low activity state occurs whenever the timer expires. A second mechanism involves filtering a sequence of binary-valued indicators corresponding respectively to a sequence of time intervals. Each indicator indicates whether a subframe is scheduled during the corresponding time interval. The filter output is compared to a threshold to determine high/low activity state. The temporal width of the filter impulse response may be increased to support fast initial response without harming the accuracy of activity-state determination in the steady state.
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公开(公告)号：US09628361B2
公开(公告)日：2017-04-18
申请号：US14626218
申请日：2015-02-19
Applicant: Apple Inc.
Inventor： Youngjae Kim , Joonsuk Kim
CPC classification number: H04L43/0876 , H04L65/1069 , H04W4/16 , H04W24/08 , H04W74/085 , H04W84/12
Abstract: This disclosure relates to wireless communication techniques for high short packet density scenarios. According to some embodiments, a wireless device may determine whether a wireless medium is experiencing crowded short packet conditions during a first period of time. The wireless device may select an operational mode from at least a first operational mode and a second operational mode based at least in part on whether the wireless medium is experiencing crowded short packet conditions. The wireless device may perform wireless communication on the wireless medium according to the selected operational mode.
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