公开(公告)号：US10085176B2

公开(公告)日：2018-09-25

申请号：US15584433

申请日：2017-05-02

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W28/08 ,  H04W76/04 ,  H04W76/27 ,  H04W84/12 ,  H04W88/06 ,  H04W92/10

CPC classification number: H04W28/08 ,  H04W72/1215 ,  H04W76/27 ,  H04W84/12 ,  H04W88/06 ,  H04W92/10

Abstract: This disclosure relates to use of WLAN virtual interfaces. According to one embodiment, a wireless device may be capable of using a WLAN chipset for user initiated WLAN communication and for cellular offloading WLAN communication. A separate WLAN virtual interface may be established for each type of WLAN communication, including a first WLAN virtual interface between the WLAN chipset and a WLAN connectivity manager executing on an application processor of the wireless device and a second WLAN virtual interface between the WLAN chipset and a cellular connectivity manager executing on the application processor. The virtual interfaces may each use a different IP address, and may either multiplex data onto a shared RF chain in a time-sharing manner or each be provided with their own RF chain to perform WLAN communication.

公开(公告)号：US10085144B2

公开(公告)日：2018-09-25

申请号：US14870763

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Dawei Zhang ,  Syed Aon Mujtaba

IPC: H04W8/06 ,  H04W76/14 ,  H04W8/00 ,  H04W52/02

CPC classification number: H04W8/005 ,  H04W52/0241 ,  H04W76/14 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26

Abstract: In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs.

公开(公告)号：US10057823B2

公开(公告)日：2018-08-21

申请号：US15153676

申请日：2016-05-12

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Samy Khay-Ibbat ,  Sarma V. Vangala ,  Rafael L. Rivera-Barreto ,  David Boettger ,  Awais M. Hussain ,  Syed Aon Mujtaba

IPC: H04W36/00 ,  H04W36/30 ,  H04B17/336 ,  H04B17/382

CPC classification number: H04W36/0083 ,  H04B17/336 ,  H04B17/382 ,  H04W36/0058 ,  H04W36/00837

Abstract: This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.

公开(公告)号：US10051682B2

公开(公告)日：2018-08-14

申请号：US15290908

申请日：2016-10-11

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Venkateswara Rao Manepalli ,  Madhusudan Chaudhary ,  Faraz Faheem ,  Syed Aon Mujtaba ,  Jianxiong Shi ,  Sreevalsan Vallath

IPC: H04W76/04 ,  H04W76/27 ,  H04W72/12 ,  H04L1/18 ,  H04W28/02 ,  H04W40/00 ,  H04W84/04 ,  H04W88/02

CPC classification number: H04W76/27 ,  H04L1/1832 ,  H04W28/0268 ,  H04W40/005 ,  H04W72/1242 ,  H04W84/042 ,  H04W88/02

Abstract: This disclosure relates to techniques for scheduling radio resource control connections between a wireless device and a network element of a network in advance. According to some embodiments, a wireless device may provide an indication of one or more types of upcoming data traffic to the network element. The network element may schedule one or more radio resource control connections for the wireless device based at least in part on the indication of one or more types of upcoming data traffic. The network element may provide an indication of the scheduled radio resource control connection(s) to the wireless device. The wireless device and the network may establish the scheduled radio resource control connection at the scheduled time.

公开(公告)号：US20180213458A1

公开(公告)日：2018-07-26

申请号：US15933837

申请日：2018-03-23

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W36/22 ,  H04W36/14 ,  H04W36/32 ,  H04W36/00 ,  H04W84/12 ,  H04W88/06 ,  H04W84/04

CPC classification number: H04W36/22 ,  H04W36/0094 ,  H04W36/14 ,  H04W36/32 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: In at least some embodiments, a method, apparatus, and system for performing communication using a plurality of radio access technologies (RATs) including a cellular RAT and a short-range RAT. A mobile device may be configured to receive information regarding traffic steering, i.e., cellular/short-range RAT handover, from nearby short-range access points and/or from a cellular base station. The mobile device may generate or determine mobility information of the mobile device, which indicates an amount of movement of the mobile device. The mobile device may determine whether the mobile device should transition between the cellular RAT and the short-range RAT based at least in part on the traffic-steering information and the mobility information. The mobile device may selectively transition between the cellular RAT and the short-range RAT based on the determination.

公开(公告)号：US20180124739A1

公开(公告)日：2018-05-03

申请号：US15860410

申请日：2018-01-02

Applicant: Apple Inc.

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

IPC: H04W68/00 ,  H04W72/04

CPC classification number: H04W68/005 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/048 ,  H04W76/28

Abstract: For paging user devices that are link budget limited (LBL), a base station transmits a special ID that is used by said devices to identify a paging frame and/or a paging occasion. When transmitting a paging message for an LBL device, the base station may use: (a) larger aggregation and larger CFI (than conventionally allowed) and (b) a larger number of resource blocks (than conventionally allowed) for paging payload. If paging messages for LBL devices saturate the paging frame capacity, the base station may allocate a plurality of special IDs. If paging messages for LBL devices and/or other data transfers saturate network capacity, at least a subset of the LBL devices may be directed to enter a connected-state discontinuous reception (DRX) mode, wherein those devices will remain in connected mode and periodically check for resource allocations. Paging payload information may be repeatedly transmitted in successive subframes, to support soft combining.

公开(公告)号：US09961632B2

公开(公告)日：2018-05-01

申请号：US14860773

申请日：2015-09-22

Applicant: Apple Inc.

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

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

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：US09955398B2

公开(公告)日：2018-04-24

申请号：US15013335

申请日：2016-02-02

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W36/22 ,  H04W36/14 ,  H04W36/32 ,  H04W84/04 ,  H04W84/12 ,  H04W88/06 ,  H04W36/00

CPC classification number: H04W36/22 ,  H04W36/0094 ,  H04W36/14 ,  H04W36/32 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: In at least some embodiments, a method, apparatus, and system for performing communication using a plurality of radio access technologies (RATs) including a cellular RAT and a short-range RAT. A mobile device may be configured to receive information regarding traffic steering, i.e., cellular/short-range RAT handover, from nearby short-range access points and/or from a cellular base station. The mobile device may generate or determine mobility information of the mobile device, which indicates an amount of movement of the mobile device. The mobile device may determine whether the mobile device should transition between the cellular RAT and the short-range RAT based at least in part on the traffic-steering information and the mobility information. The mobile device may selectively transition between the cellular RAT and the short-range RAT based on the determination.

公开(公告)号：US09949216B2

公开(公告)日：2018-04-17

申请号：US14492623

申请日：2014-09-22

Applicant: Apple Inc.

Inventor： Vinay R. Majjigi ,  Tarik Tabet ,  Christian W. Mucke ,  William S. Burchill

IPC: H04W52/26 ,  H04W52/52 ,  H04L1/00

CPC classification number: H04W52/52 ,  H04L1/0003

Abstract: This disclosure relates to optimizing power consumption for cellular communication based on transport block size in combination with channel condition measurements via power amplifier biasing. According to one embodiment, an indication of a transport block size to be used for uplink communication with a base station may be received. It may be determined that the transport block size provides more robust communication characteristics than required for current channel conditions. A power amplifier (PA) bias current for uplink communication with the cellular base station may be selected based at least in part on determining that the transport block size provides more robust communication characteristics than required for the current channel conditions. In particular, PA bias current selection may be biased to reduce power consumption at a cost of greater non-linearity based on the transport block size providing more robust communication characteristics than required for the current channel conditions.

公开(公告)号：US20180020376A1

公开(公告)日：2018-01-18

申请号：US15593702

申请日：2017-05-12

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Lydi Smaini ,  Tarik Tabet ,  Syed Aon Mujtaba

IPC: H04W28/08 ,  H04W72/04 ,  H04W16/14

CPC classification number: B08B3/08 ,  B08B3/022 ,  B08B3/041 ,  F16H57/01 ,  F16H2057/012 ,  G01N27/9033 ,  H04W16/14 ,  H04W28/085 ,  H04W72/0453 ,  H04W72/1252 ,  H04W72/14

Abstract: A wireless communication device (UE) may monitor grants received from respective cells associated with one or more first (e.g. licensed) frequency band(s) and one or more second (e.g. unlicensed) frequency band(s). Based on the received grants the UE may determine if an imbalance exists in the radio resource allocation, whereby the UE communicates more than intended in the second frequency band(s). The imbalance may be specified with respect to the ratio or portion of the communications that are conducted in the second frequency band(s) with respect to all wireless communications of the UE. If the UE detects an imbalance, it may transmit a report to the network (e.g. to the base station serving the UE) indicating unfavorable conditions for the UE to be operating in the second frequency band(s). In response, the network may disable the respective cell(s) associated with the second frequency band(s) and/or it may disable carrier aggregation for the UE.