-
公开(公告)号：US20200154417A1
公开(公告)日：2020-05-14
申请号：US16711682
申请日：2019-12-12
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 (MB) 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：US20190306798A1
公开(公告)日：2019-10-03
申请号：US16444004
申请日：2019-06-18
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet
Abstract: A wireless communication device (UE) may include a paging subsystem that performs paging-monitoring as part of wireless communications of the wireless communication device. The UE may place wireless communication system resources not required during paging-monitoring into either a low-power state or a power-down state, and those system resources may remain in one of those respective states during paging-monitoring. The wireless communication system resources not required during the paging-monitoring may include at least a wireless communications protocol stack used during the wireless communications of the UE, and at least system resources used for performing uplink related tasks independently of wireless communication system resources used for performing downlink related tasks. The paging subsystem may include at least a control manager subsystem capable of decoding a physical downlink control channel, a downlink control subsystem capable of performing tasks related to a physical downlink data channel, and a message parser for parsing paging messages.
-
公开(公告)号：US10194462B2
公开(公告)日：2019-01-29
申请号：US14795750
申请日：2015-07-09
Applicant: Apple Inc.
Inventor： Tarik Tabet , Syed Aon Mujtaba , Moustafa M. Elsayed
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：US10128795B2
公开(公告)日：2018-11-13
申请号：US15398114
申请日：2017-01-04
Applicant: Apple Inc.
Inventor： Lydi Smaini , Tarik Tabet , Moustafa M. Elsayed
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.
-
公开(公告)号：US10091775B2
公开(公告)日：2018-10-02
申请号：US15175102
申请日：2016-06-07
Applicant: Apple Inc.
Inventor： Tarik Tabet , Awais M. Hussain , Syed Aon Mujtaba , Moustafa M. Elsayed
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.
-
Patent Agency Ranking
公开(公告)号：US10085275B2
公开(公告)日：2018-09-25
申请号：US15260349
申请日：2016-09-09
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet
IPC: H04W72/12 , H04L12/861 , H04W84/04
CPC classification number: H04W72/1205 , H04L49/90 , H04W52/0216 , H04W52/0261 , H04W72/1289 , H04W84/042 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/168 , Y02D70/23 , Y02D70/24 , Y02D70/26
Abstract: This disclosure relates to synchronization and interprocessor communication techniques in an improved system architecture for a cellular modem. According to some embodiments, a wireless device may include a control module, a downlink module, and an uplink module. The control module may decode control information to determine whether uplink or downlink activities are scheduled. If any uplink or downlink activities are scheduled, the control module may activate one or both of the uplink module or the downlink module to perform the scheduled activities. If no downlink activities are scheduled, the downlink module may not be activated by the control module, and may remain asleep until a later time when downlink activities are scheduled. Likewise, if no uplink activities are scheduled, the uplink module may not be activated by the control module, and may remain asleep until a later time when uplink activities are scheduled.
-
公开(公告)号：US10034271B2
公开(公告)日：2018-07-24
申请号：US14726771
申请日：2015-06-01
Applicant: Apple Inc.
Inventor： Tarik Tabet , Konstantinos Sarrigeorgidis , Moustafa M. Elsayed
IPC: H04W72/04 , H04L5/00 , H04B17/336
CPC classification number: H04W72/0406 , H04B17/336 , H04L5/0007 , H04L5/0053 , H04L5/0091 , H04L5/0094
Abstract: A mobile device (UE) may decode the Physical Control Format Indicator Channel (PCFICH) blindly, which may include obtaining resource elements (REs) that are reserved for the Physical Downlink Control Channel (PDCCH), based on a largest value of a control format indicator (CFI), finding a total number of control channel elements (CCEs) according to the obtained REs, numbering the CCEs, and decoding the PDCCH for the largest value of the CFI over the numbered CCEs. Accordingly, the UE does not need to decode the PCFICH) specifically. In some cases, the UE may indicate to the network that it is a constrained device, and the network may transmit control information using a reserved CFI value in response to the indication that the UE is a constrained device. The UE may then not decode the PCFICH, and decode the PDCCH based on the PDCCH occupying a first four OFDM symbols.
-
公开(公告)号：US09942847B2
公开(公告)日：2018-04-10
申请号：US14987805
申请日：2016-01-05
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet , Konstantinos Sarrigeorgidis
CPC classification number: H04W52/0225 , H04W52/0216 , H04W52/0229 , H04W52/0274 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/24 , Y02D70/26
Abstract: This disclosure relates to implementing an adaptive sleep schedule for PDCCH decoding. In some embodiments, prior to receiving PDCCH signaling, a user equipment device may schedule wireless communication circuitry to prepare for and decode the PDCCH signaling, which may include dynamically preparing a first interrupt for the wireless communication circuitry to perform the preparing for and the decoding. In response to the first interrupt, the UE may prepare for and decode the PDCCH signaling using the wireless communication circuitry. The UE may analyze the result of the decoding, which may include determining that the PDCCH signaling does not comprise information for the UE. In response to determining that the PDCCH signaling does not comprise information for the UE, the UE may schedule the wireless communication circuitry to shut down, which may include dynamically preparing a second interrupt to shut down the wireless communication circuitry.
-
公开(公告)号：US09883480B2
公开(公告)日：2018-01-30
申请号：US14795733
申请日：2015-07-09
Applicant: Apple Inc.
Inventor： Tarik Tabet , Syed Aon Mujtaba , Moustafa M. Elsayed
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.
-
50.发明申请公开(公告)号：US20170195964A1
公开(公告)日：2017-07-06
申请号：US15274933
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Lydi Smaini , Tarik Tabet , Moustafa M. Elsayed
IPC: H04W52/02
CPC classification number: H04W52/0235 , H04W52/0238 , H04W52/0241 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/24 , Y02D70/26
Abstract: A wireless communication device may operate in different power modes based at least on a decoding of a Physical Data Control Channel (PDCCH). The wireless communication device may operate its receiver front end circuitry (RX AFE) in any one of a number of different power modes, and may switch to operating the RX AFE in a different power mode based at least on decoding of the PDCCH. The transmit leakage does not need to be monitored, and the wireless communication device may adjust/adapt the sensitivity and linearity of its RX AFE based on PDCCH decoding and in some cases based additionally on one or more metrics, to reduce power consumption. The different power modes may correspond to different respective combinations of sensitivity level and linearity level at which the RX AFE is operating.
-
-
-
-
-
-
-
-
-
Search Results
69
records
(took 0.027 seconds)
