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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
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.
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公开(公告)号:US09893745B2
公开(公告)日:2018-02-13
申请号:US14990711
申请日:2016-01-07
Applicant: Apple Inc.
Inventor: Lydi Smaini , Konstantinos Sarrigeorgidis , Tarik Tabet , Syed Aon Mujtaba
CPC classification number: H04B1/04 , H04B2001/0491 , H04L5/0044 , H04L27/2636 , H04L27/361 , H04L27/362 , H04W88/02
Abstract: This disclosure relates to a system and method for generating single-carrier frequency division multiple access (SC-FDMA) transmissions using a high efficiency architecture. According to some embodiments, frequency resources allocated for a transmission may be determined. The allocated frequency resources may have a bandwidth less than a channel bandwidth of a frequency channel of the transmission, and may be centered around a particular frequency. The frequency may be offset from the center frequency of the channel. A baseband signal located around DC corresponding to the channel center frequency may be generated. The baseband signal may be up-converted to an RF signal using a local oscillator tuned to the frequency around which the allocated frequency resources are centered. The RF signal may be transmitted.
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公开(公告)号:US20170195147A1
公开(公告)日:2017-07-06
申请号:US15375245
申请日:2016-12-12
Applicant: Apple Inc.
Inventor: Konstantinos Sarrigeorgidis , Tarik Tabet , Lydi Smaini
Abstract: Techniques are disclosed relating to DC interference cancelation in received wireless signals. Disclosed techniques may be performed in the digital domain, in conjunction with analog cancelation techniques. In some embodiments, a receiver apparatus operates a local oscillator at a frequency corresponding to a particular pilot symbol in a received wireless signal. In some embodiments the receiver estimates DC interference at the frequency based on the received pilot symbol (this may be facilitated by the fact that the contents of pilot symbols are known, because they are typically used for channel estimation). In some embodiments, the receiver apparatus is configured to cancel the DC interference based on the estimate to determine received data in subsequently received signals at the frequency. Disclosed techniques may allow narrowband receivers to efficiently use more of their allocated frequency bandwidth, rather than wasting bandwidth near the frequency of the local oscillator.
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54.
公开(公告)号:US20240297669A1
公开(公告)日:2024-09-05
申请号:US18430059
申请日:2024-02-01
Applicant: Apple Inc.
Inventor: Wassim El-Hassan , Brian H Bremer , Lydi Smaini , Abhinav Dayal , Daphne I Gorman , Xuefeng Zhao , Kai Bai
CPC classification number: H04B1/0064 , H03F3/19 , H04B1/0075 , H03F2200/451
Abstract: Wireless communication circuitry includes a single transmission pathway for transmitting radio frequency signals in different frequency bands used for communicating on different types of wireless networks.
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公开(公告)号:US20240147365A1
公开(公告)日:2024-05-02
申请号:US18474921
申请日:2023-09-26
Applicant: Apple Inc.
Inventor: Wassim El-Hassan , Abhinav Dayal , Andrea Ruaro , Brian H. Bremer , Daphne I. Gorman , Lydi Smaini
IPC: H04W52/02
CPC classification number: H04W52/0229 , H04W52/0245
Abstract: Electronic devices may be provided with wireless circuitry having an antenna, a primary receiver, and a secondary receiver. The primary receiver may be coupled to the antenna over a first signal path having a low noise amplifier. An input of the primary receiver may be coupled to the first signal path and an input of the secondary receiver may be coupled to a node on the first signal path over a second signal path. The primary receiver may consume more power and exhibit more linearity than the secondary receiver. The secondary receiver may wake while the primary receiver is asleep and may wake the primary receiver when paging signals are received. If desired, the wireless circuitry may be switched between a single-receiver mode and a receiver diversity mode based on wireless performance metric data gathered by the primary receiver and/or the secondary receiver.
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公开(公告)号:US20240089949A1
公开(公告)日:2024-03-14
申请号:US17932277
申请日:2022-09-14
Applicant: Apple Inc.
Inventor: Anatoliy S. Ioffe , Lydi Smaini
CPC classification number: H04W72/1215 , H04W64/003 , H04W76/10
Abstract: User equipment may transmit and receive wireless signals to and from communication networks. However, in close proximity, transmission signals from a first user equipment may interfere with wireless signals received by a second user equipment. In certain instances, the user equipment may establish a session via peer-to-peer technologies and coordinate timing for communication with the networks. For example, the user equipment may establish a sidelink having a frequency different from a frequency used for communication with the networks. The user equipment may prioritize communication to a first communication network over a second communications network or vice versa. The user equipment may also designate a network connector and relay communication with the networks through the network connector. Additionally or alternatively, the user equipment may share the task of determining a global position. Accordingly, the user equipment may reduce or eliminate signal interference and preserve battery power.
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公开(公告)号:US11778516B2
公开(公告)日:2023-10-03
申请号:US17722033
申请日:2022-04-15
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
CPC classification number: H04W28/24 , H04L5/0005 , H04L5/0044 , H04W8/22 , H04W52/0235 , Y02D30/70
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.
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公开(公告)号:US11540104B2
公开(公告)日:2022-12-27
申请号:US16850164
申请日:2020-04-16
Applicant: Apple Inc.
Inventor: Tarik Tabet , Lydi Smaini , Ronald W. Dimpflmaier , Matthias Sauer , Venkateswara Rao Manepalli
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.
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公开(公告)号:US20220240127A1
公开(公告)日:2022-07-28
申请号:US17722033
申请日:2022-04-15
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
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.
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公开(公告)号:US11166328B2
公开(公告)日:2021-11-02
申请号:US16106068
申请日:2018-08-21
Applicant: Apple Inc.
Inventor: Tarik Tabet , Lydi Smaini , Ronald W. Dimpflmaier
Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for performing control and data communications between wireless devices that have performed discovery. A first device may transmit first control information to a second wireless device. The first control information may indicate a buffer status of the first wireless device. The first device may receive second control information from the second wireless device. The second control information may include an acknowledgement indication for the first control information. The first device may transmit a data communication to the second wireless device based at least in part on the first control information and the second control information.
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