公开(公告)号：US20180213382A1

公开(公告)日：2018-07-26

申请号：US15876582

申请日：2018-01-22

Applicant: Apple Inc.

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

IPC: H04W4/80 ,  H04W8/00 ,  H04W72/12 ,  H04W76/14 ,  H04L29/08

CPC classification number: H04W4/80 ,  H04L67/04 ,  H04L67/1068 ,  H04L67/12 ,  H04W4/70 ,  H04W8/005 ,  H04W72/121 ,  H04W76/14

Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for performing discovery in an off grid radio system. A wireless device may obtain synchronization with a peer-to-peer communication group. The wireless device may determine the location of the wireless device within the peer-to-peer communication group based at least in part on signal strength of a synchronization signal used to obtain the synchronization. The wireless device may perform peer-to-peer discovery in the peer-to-peer communication group, such that time and frequency resources used by the wireless device to perform the peer-to-peer discovery are determined based at least in part on the location of the first wireless device within the peer-to-peer communication group.

公开(公告)号：US10034302B2

公开(公告)日：2018-07-24

申请号：US14795750

申请日：2015-07-09

Applicant: Apple Inc.

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

IPC: H04W74/00 ,  H04B7/06 ,  H04L1/18 ,  H04W74/08 ,  H04W72/12 ,  H04W72/14 ,  H04L1/16

Abstract: Mechanisms are disclosed for improved transmission of uplink control information by a user equipment (UE) that is link budget limited. In one embodiment, the UE transmits a message to the base station indicating that the UE is link budget limited. In response to the message, the base station sends an uplink grant to the UE, enabling the UE to transmit uplink control information on the physical uplink shared channel (PUSCH) instead of on the Physical Uplink Control Channel (PUCCH). In another embodiment, the base station sends an uplink grant to a link-budget-limited UE each time downlink traffic is transmitted to the UE, enabling the UE to send ACK/NACK feedback on the PUSCH instead of the PUCCH. In another embodiment, the UE transmits a scheduling request (SR) to the base station as part of a random access procedure, enabling the SR to be transmitted on the PUSCH instead of the PUCCH.

公开(公告)号：US09961007B2

公开(公告)日：2018-05-01

申请号：US15012680

申请日：2016-02-01

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Sarma V. Vangala ,  Sreevalsan Vallath ,  Tarik Tabet

IPC: H04L12/811 ,  H04L29/06 ,  H04W24/08 ,  H04W28/02

CPC classification number: H04L47/38 ,  H04L65/601 ,  H04L65/602 ,  H04L65/604 ,  H04L65/608 ,  H04L65/80 ,  H04W24/08 ,  H04W28/0236

Abstract: A method for initiating a codec rate change during a VoIP call by a wireless communication device is disclosed. The method can include the wireless communication device establishing a first codec rate for use in the VoIP call during a call establishment phase; using the first codec rate to encode voice data for transmission during a first portion of the VoIP call; determining a channel quality while using the first codec rate; determining that the channel quality satisfies a threshold for requesting a codec rate change; requesting a codec rate change from the first codec rate to a second codec rate in response to the channel quality satisfying the threshold; and using the second codec rate to encode voice data for transmission during a second portion of the VoIP call.

公开(公告)号：US09924515B2

公开(公告)日：2018-03-20

申请号：US14661543

申请日：2015-03-18

Applicant: Apple Inc.

Inventor： Dawei Zhang ,  Huarui Liang ,  Tarik Tabet ,  Farouk Belghoul

IPC: H04W72/04 ,  H04W52/36 ,  H04W52/14 ,  H04W52/16

CPC classification number: H04W72/0453 ,  H04W52/146 ,  H04W52/16 ,  H04W52/367 ,  Y02D70/00

Abstract: A method for dynamically selecting an A-MPR value to apply for an uplink transmission is provided. The method can include a wireless communication device receiving an indication from a network that A-MPR should be applied for uplink transmissions within a frequency band used for communication between the wireless communication device and the network. The method can further include the wireless communication device receiving an RB allocation for a subset of RB's within the frequency band from the network. The method can additionally include the wireless communication device determining an allocation ratio and a distribution characteristic of the allocated subset of RB's within the frequency band. The method can also include the wireless communication device selecting an A-MPR value to apply based at least in part on the allocation ratio and the distribution characteristic. The method can further include the wireless communication device applying the selected A-MPR.

公开(公告)号：US20180049075A1

公开(公告)日：2018-02-15

申请号：US15790230

申请日：2017-10-23

Applicant: Apple Inc.

Inventor： Syed Aon Mujtaba ,  Tarik Tabet ,  Paul V. Flynn ,  Kee-Bong Song

IPC: H04W36/00

CPC classification number: H04W36/0066 ,  H04W36/0085 ,  H04W36/0088 ,  H04W36/14 ,  H04W36/32 ,  H04W68/04 ,  H04W68/12 ,  H04W76/28 ,  H04W88/06 ,  H04W88/08

Abstract: A user equipment (UE) operating in a communication system comprising a base station and one or more UEs. The UE may be configured to operate on or “camp” on two different networks with one radio. In this exemplary system, the radio may be normally connected to the first network (NW1) and may from time to time be “tuned away” from NW1 to a second network (NW2). The UE may inform NW1 that it has tuned away to another network, e.g., using start and end indicators. This information may prevent NW1 from wasting downlink capacity by unnecessarily allocating downlink resources to the UE during the tune-away. Alternatively, or in addition, this information may prevent NW1 from penalizing the UE, e.g., by reducing its future downlink allocations, since the UE does not respond to NW1 commands during the tune-away.

公开(公告)号：US09860833B2

公开(公告)日：2018-01-02

申请号：US15013738

申请日：2016-02-02

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Tarik Tabet ,  Rafael L. Rivera-Barreto ,  Moustafa M. Elsayed

IPC: H04W48/18 ,  H04W4/00 ,  H04W72/08 ,  H04W72/04 ,  G06F1/16 ,  H04M1/725 ,  H04W88/06 ,  H04B1/3827 ,  H04M1/60 ,  H04W52/02 ,  H04W88/04

CPC classification number: H04W48/18 ,  G06F1/163 ,  H04B1/385 ,  H04B2001/3861 ,  H04M1/6066 ,  H04M1/7253 ,  H04M2250/02 ,  H04M2250/06 ,  H04W4/80 ,  H04W52/0261 ,  H04W52/0277 ,  H04W72/0433 ,  H04W72/048 ,  H04W72/08 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/26 ,  Y02D70/40

Abstract: Some embodiments relate to an accessory device that may operate in a first mode, where the first radio of the accessory device is configured to perform cellular communication with a base station, or a second mode, where the second radio of the accessory device is configured to perform short-range communication with a companion device and utilize cellular functionality of the companion device to provide cellular communications through the companion device to the base station. The accessory device may operate to selectively transition between the first mode and the second mode based on one or more factors, such as signal strength of the short-range communication between the accessory device and the companion device, the relative batter level of the two devices, and/or a communications status of the companion device.

公开(公告)号：US20170359829A1

公开(公告)日：2017-12-14

申请号：US15496388

申请日：2017-04-25

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Samy Khay-Ibbat ,  Krisztian Kiss ,  Rafael L. Rivera-Barreto ,  Cesar Perez ,  Moustafa M. Elsayed ,  Prashant H. Vashi

IPC: H04W72/08 ,  H04W72/04

CPC classification number: H04W72/087 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/048

Abstract: A user equipment (UE) device may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and additional optimization requirements. The new device category may identify the UE device as a wearable device. According to some embodiments, LTE category M may be extended to support non-MTC operations performed by wearable devices. For example, the new device category may support UE mobility and may disallow access barring. Additional extensions may be implemented in response to an indication by the UE that the UE is implementing a specific application, such as VoLTE or a near real-time application, such as audio streaming. In some scenarios, the indication may include the UE indicating a specific QCI value. In some scenarios, the indication may include the UE attaching to a specific APN.

公开(公告)号：US09807673B2

公开(公告)日：2017-10-31

申请号：US15016651

申请日：2016-02-05

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Swaminathan Balakrishnan ,  Deepankar Bhattacharjee ,  Xiantao Sun

IPC: H04W48/10 ,  H04W84/04

CPC classification number: H04W48/10 ,  H04W84/042

Abstract: This disclosure relates to techniques for enabling a cellular network to more efficiently announce special network capabilities to UE's in its coverage area. The special network capabilities may be specific to a first class of UE devices and/or may be outside of the relevant telecommunication standard used by the cellular network. The base station may transmit a dummy System Information Block-1 (SIB-1), wherein the dummy system information block is broadcast separately from regular system information block 1's (SIB-1's).

公开(公告)号：US09794015B2

公开(公告)日：2017-10-17

申请号：US14667745

申请日：2015-03-25

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Dawei Zhang ,  Huarui Liang

IPC: H04W4/00 ,  H04J11/00 ,  H04L25/02 ,  H04W48/16

CPC classification number: H04J11/0079 ,  H04J11/005 ,  H04L25/0204 ,  H04L25/0228 ,  H04W48/16

Abstract: This disclosure relates to performing cell measurements in unlicensed frequency bands and/or in channels with interference. According to some embodiments, a wireless user equipment (UE) device may define a reference symbol vector for a cell. Each respective element of the reference symbol vector may correspond to a respective subcarrier of the cell that carries a respective reference symbol. The UE may perform channel estimation at each respective element of the reference symbol vector. The UE may estimate the cell strength of the cell by cross-correlating channel estimates of different elements of the reference symbol vector.

公开(公告)号：US20170196016A1

公开(公告)日：2017-07-06

申请号：US15387904

申请日：2016-12-22

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Awais M. Hussain ,  Lydi Smaini ,  Moustafa M. Elsayed ,  Syed Aon Mujtaba ,  Matthias Sauer ,  Ronald W. Dimpflmaier ,  Bernd W. Adler ,  Christian W. Mucke

IPC: H04W72/08 ,  H04W72/04

CPC classification number: H04W28/24 ,  H04L5/0005 ,  H04L5/0044 ,  H04W8/22 ,  H04W52/0235 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/26

Abstract: A user equipment (UE) device may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and/or additional optimization requirements. The UE device may communicate with a cellular base station according to a first mode of operation associated with the new device category, and may switch to communicating with the cellular base station according to a second mode of operation associated with a second (pre-existing) device category in response to the link budget requirements exceeding a specified value and the quality of service requirements not being sensitive. The UE device may also switch to communicating with the cellular base station according to a third mode of operation associated with a third (pre-existing) device type in response to the link budget requirement not exceeding the specified value, or the QoS requirements being sensitive and a downlink throughput requirement exceeding a specified throughput value.