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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
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.
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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
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.
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公开(公告)号：US20170195113A1
公开(公告)日：2017-07-06
申请号：US15398114
申请日：2017-01-04
Applicant: Apple Inc.
Inventor： Lydi Smaini , Tarik Tabet , Moustafa M. Elsayed
CPC classification number: H03C3/0916 , H03C3/0941 , H03C3/095 , H03C3/0966 , H03C5/00 , H04L27/00
Abstract: This disclosure relates to an apparatus, system, and method for generating uplink transmissions using a polar architecture including a phase locked loop with potential for two point injection. According to some embodiments, frequency resources allocated for a transmission may be determined. A cartesian baseband signal may be generated for the uplink transmission. The cartesian baseband signal may be converted to a polar baseband signal, including a baseband phase signal and an amplitude signal. Modulation parameters, potentially including whether to use one point injection or two point injection with a phase locked loop, may be determined. The baseband phase signal may be upconverted to an RF phase signal according to the determined modulation parameters. The RF phase signal may be amplified according to the amplitude signal to produce an RF signal. The RF signal may be transmitted.
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