公开(公告)号：US10201031B2

公开(公告)日：2019-02-05

申请号：US15347203

申请日：2016-11-09

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Rafael L. Rivera-Barreto

IPC: H04W76/02 ,  H04W76/16 ,  H04W76/36 ,  H04W24/10 ,  H04W72/08 ,  H04L5/00 ,  H04W84/12 ,  H04W88/06

Abstract: This disclosure relates to temporary suspension, and subsequent resumption, of radio resource aggregation in a wireless communication system. A wireless device may establish a communication link with a base station. The communication link with the base station may aggregate radio resources according to a first wireless communication technology and a second wireless communication technology. Use by the communication link of radio resources according to the second wireless communication technology may be suspended. Wireless communication activity according to the second wireless communication technology that is not associated with the communication link may be performed while use by the communication link of radio resources according to the second wireless communication technology is suspended. Use by the communication link of radio resources according to the second wireless communication technology may be resumed after performing the wireless communication activity according to the second wireless communication technology.

公开(公告)号：US20190037544A1

公开(公告)日：2019-01-31

申请号：US16145030

申请日：2018-09-27

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Awais M. Hussain ,  Syed Aon Mujtaba ,  Moustafa M. Elsayed

IPC: H04W72/04

Abstract: This disclosure relates to providing system information for cell access to link budget limited devices. According to some embodiments, a base station may transmit an announcement information block (AIB) in a downlink shared data channel (e.g., PDSCH), wherein the AIB contains information useable by a UE in determining the location of system information in the downlink shared data channel. The UE can thus determine the location of and decode system information without having to decode a downlink control channel (e.g., PDCCH). This may be important for certain classes of devices, such as link budget limited devices, which have issues in decoding the downlink control channel. Improved paging scheduling techniques are also disclosed which more efficiently use PDCCH paging resources.

公开(公告)号：US10110294B2

公开(公告)日：2018-10-23

申请号：US14952319

申请日：2015-11-25

Applicant: Apple Inc.

Inventor： Srinivasan Nimmala ,  Navid Damji ,  Tarik Tabet ,  Li Su ,  Longda Xing ,  Zhu Ji

IPC: H04B7/08 ,  H04W24/02 ,  H04W52/02

Abstract: A method for adaptively disabling receiver diversity is provided. The method can include a wireless communication device determining an active data traffic pattern; defining a threshold channel quality metric based at least in part on a threshold channel quality needed to support a threshold quality of service for the active data traffic pattern; comparing a measured channel quality to the threshold channel quality metric; and disabling receiver diversity in an instance in which the measured channel quality metric satisfies the threshold channel quality metric.

公开(公告)号：US10057860B2

公开(公告)日：2018-08-21

申请号：US15605977

申请日：2017-05-26

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Samy Khay-Ibbat ,  Awais M. Hussain

IPC: H04B7/00 ,  H04W52/24 ,  H04W72/08 ,  H04L5/00 ,  H04W52/26 ,  H04W72/04

CPC classification number: H04W52/241 ,  H04L5/005 ,  H04L5/0057 ,  H04W52/262 ,  H04W52/32 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/085

Abstract: A link-budget-limited wireless communication device (UE) may implement improved radio link monitoring procedures for enhancing the link-budget of the UE. The UE may monitor the radio link and may determine whether the radio link can support a lowest acceptable link quality according to a hysteresis-based comparison that uses threshold values to determine error rates associated with a physical control channel. The UE may also identify itself to the network as a link-budget-limited device, and the network may enable special link-budget enhancing features for the UE, including boosting the power of the resource elements (REs) carrying physical channel signaling/data to the UE. The UE may detect the presence of power boost and may estimate/determine the power boost level. The UE may modify the threshold values based on the power boost detection and/or results of the power boost level estimation/determination, and may use the modified threshold values for determining radio link quality during radio link monitoring.

公开(公告)号：US20180213474A1

公开(公告)日：2018-07-26

申请号：US15933494

申请日：2018-03-23

Applicant: Apple Inc.

Inventor： Konstantinos Sarrigeorgidis ,  Tarik Tabet ,  Moustafa M. Elsayed

IPC: H04W52/02 ,  H04B1/10 ,  H04B1/525 ,  H04B1/00

CPC classification number: H04W52/0209 ,  H04B1/0028 ,  H04B1/10 ,  H04B1/525 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26 ,  Y02D70/40

Abstract: A wireless user equipment (UE) device may include a receiver and transmitter. The UE device may dynamically vary the fidelity requirements imposed on the analog signal processing performed by the receiver and/or the transmitter in response factors such as: amount of signal interference (e.g., out-of-band signal power); modulation and coding scheme; number of spatial streams; extent of transmitter leakage; and size and/or frequency location of resources allocated to the UE device. Thus, the UE device may consume less power on average than a UE device that is designed to satisfy fixed fidelity requirements associated with a worst case reception scenario and/or a worst case transmission scenario.

公开(公告)号：US20180199388A1

公开(公告)日：2018-07-12

申请号：US15863701

申请日：2018-01-05

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Lydi Smaini ,  Venkateswara Rao Manepalli ,  Matthias Sauer ,  Ronald W. Dimpflmaier ,  Farouk Belghoul ,  Christian W. Mucke

IPC: H04W76/14 ,  H04W56/00 ,  H04W72/04

Abstract: This disclosure relates to techniques for supporting narrowband device-to-device (D2D) wireless communication, including possible techniques for providing synchronization and master information block signals in an off grid radio system. A wireless device may provide D2D synchronization signals for a D2D communication group. The D2D synchronization signals may be provided using multiple frequency channels. The D2D synchronization signals may be provided on each respective frequency channel of the frequency channels during a respective portion of a D2D synchronization signal cycle in a sequential manner.

公开(公告)号：US09992770B2

公开(公告)日：2018-06-05

申请号：US15380949

申请日：2016-12-15

Applicant: Apple Inc.

Inventor： Moustafa M. Elsayed ,  Tarik Tabet ,  Konstantinos Sarrigeorgidis

IPC: H04B1/38 ,  H04W72/04 ,  H04W52/52

CPC classification number: H04W72/042 ,  H04W52/0209 ,  H04W52/0229 ,  H04W52/52 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/26

Abstract: An apparatus, system, and method for performing PDCCH preparation in RF circuitry are described. In one embodiment, power may be provided to a crystal oscillator to exit a first sleep state. One or more clocking signals may be provided to RF circuitry based on output from the crystal oscillator. Calibration and state restoration of the RF circuitry may be performed independent of baseband circuitry. A plurality of algorithms to prepare for receiving data form a wireless communication network may be performed independent of the baseband circuitry. After initiating the plurality of algorithms, state restoration of the baseband circuitry may be performed. Data may be received from a wireless communication network using the RF circuitry. The data may be processed using the baseband circuitry. State retention for the RF circuitry and the baseband circuitry may be performed. Finally, the crystal oscillator may be powered down to enter a second sleep state.

公开(公告)号：US20180131781A1

公开(公告)日：2018-05-10

申请号：US15710926

申请日：2017-09-21

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Rohan C. Malthankar ,  Tarik Tabet

IPC: H04L29/08 ,  H04W68/00 ,  H04W52/02

CPC classification number: H04L67/26 ,  H04W52/0258 ,  H04W68/005 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/20 ,  Y02D70/23 ,  Y02D70/26

Abstract: This disclosure relates to techniques for UEs to improve reception of push notifications via a cellular network. A UE may be configured to provide, to a push notification service, preference information for push notifications associated with an application. The preference information may indicate a preferred period of delivery for the push notifications. When the push notification service receives a push notification addressed to the UE, the push notification service includes the preference information when notifying the cellular network. The cellular network provides a page to the UE, including the preference information. Based on the preference information in the page, the UE may decide whether, and in some scenarios how long, to delay before establishing a connection to receive the available push notification. The network, having access to the preference information, may accommodate the delay.

公开(公告)号：US09967112B2

公开(公告)日：2018-05-08

申请号：US13887207

申请日：2013-05-03

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Navid Damji ,  Kee-Bong Song ,  Syed Aon Mujtaba ,  Johnson Sebeni ,  Zhu Ji

IPC: H04L25/00 ,  H04L25/02

CPC classification number: H04L25/0206 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0256

Abstract: Methods and apparatus for resuming radio channel measurements and estimations after an interruption in reception. In one exemplary embodiment of the present disclosure, an adaptive solution is provided for channel estimation based at least in part on the reception interruption duration. In one variant, an LTE UE determines a windowing length and/or “shape” for a time domain channel estimation algorithm based on at least the interruption duration. In an alternate variant, an LTE UE determines the interpolation coefficients for a filter based on the interruption duration.

公开(公告)号：US20180110036A1

公开(公告)日：2018-04-19

申请号：US15846524

申请日：2017-12-19

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Awais M. Hussain ,  Samy Khay-Ibbat ,  Sarma V. Vangala ,  Rafael L. Rivera-Barreto

IPC: H04W72/04 ,  H04W48/20 ,  H04W48/12

CPC classification number: H04W72/042 ,  H04W48/12 ,  H04W48/20

Abstract: Techniques are disclosed relating to broadcasting and receiving system information in a radio access network (RAN). In one embodiment, a base station includes at least one antenna, at least one radio, configured to perform cellular communication using a radio access technology (RAT), and one or more processors coupled to the radio. In this embodiment, the base station is configured to broadcast first system information blocks (SIBs) encoded using a first coding rate and a first identifier. In this embodiment, the base station is also configured to broadcast second SIBs encoded using a second coding rate that is lower than the first coding rate and a second identifier. In this embodiment, the second SIBs include only a portion of the information included in the first SIBs and the second SIBs are usable by user equipment devices (UEs) having a limited link budget to determine access parameters for the base station.