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公开(公告)号：US10560930B2
公开(公告)日：2020-02-11
申请号：US16113039
申请日：2018-08-27
Applicant: Apple Inc.
Inventor： Awais M. Hussain , Tarik Tabet , Syed Aon Mujtaba
Abstract: This disclosure relates to techniques for transmitting and receiving control information in the common search space on an enhanced physical downlink control channel (EPDCCH). According to some embodiments, a cellular base station may allocate some resource blocks of a subframe as the EPDCCH. The cellular base station may provide control information on a common search space in the EPDCCH for wireless user equipment (UE) devices in the cell provided by the cellular base station during a subframe. A UE device may monitor the EPDCCH to determine whether any indication on the common search space decodable by the UE device is contained in the EPDCCH, and may decode such information if present.
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公开(公告)号：US10462765B2
公开(公告)日：2019-10-29
申请号：US16288996
申请日：2019-02-28
Applicant: Apple Inc.
Inventor： Tarik Tabet , Syed Aon Mujtaba , Moustafa M. Elsayed
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.
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73.发明申请公开(公告)号：US20190305922A1
公开(公告)日：2019-10-03
申请号：US16443952
申请日：2019-06-18
Applicant: Apple Inc.
Inventor： Tarik Tabet , Syed Aon Mujtaba , Samy Khay-Ibbat , Rafael L. Rivera-Barreto
Abstract: A user equipment (UE) and network entity implement improved communication methods which enable a UE to operate using differing modes of operation without detaching from a network. The UE may send first information indicating its capabilities to the network entity and may receive a first indication based on the first information. The first indication may indicate that the UE operate according to a first mode of operation. The UE may receive a second indication based on an occurrence of a first condition detectable at the network entity. The second indication may indicate that the UE operate according to a second mode of operation different from the first mode of operation. The first condition may be an initialization of a real time data packet session for the UE or may be a first message sent by the UE in response to one or more radio conditions exceeding a threshold.
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公开(公告)号：US10333686B2
公开(公告)日：2019-06-25
申请号：US15077998
申请日：2016-03-23
Applicant: Apple Inc.
Inventor： Tarik Tabet , Syed Aon Mujtaba , Samy Khay-Ibbat , Rafael L. Rivera-Barreto
Abstract: A user equipment (UE) and network entity implement improved communication methods which enable a UE to operate using differing modes of operation without detaching from a network. The UE may send first information indicating its capabilities to the network entity and may receive a first indication based on the first information. The first indication may indicate that the UE operate according to a first mode of operation. The UE may receive a second indication based on an occurrence of a first condition detectable at the network entity. The second indication may indicate that the UE operate according to a second mode of operation different from the first mode of operation. The first condition may be an initialization of a real time data packet session for the UE or may be a first message sent by the UE in response to one or more radio conditions exceeding a threshold.
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公开(公告)号：US10313090B2
公开(公告)日：2019-06-04
申请号：US15133952
申请日：2016-04-20
Applicant: Apple Inc.
Inventor： Joonsuk Kim , Guoqing Li , Syed Aon Mujtaba
Abstract: Disclosed herein are system, method, and computer program product embodiments for providing an efficient way to signal a tone mapping in a wireless communication protocol. Embodiments operate by receiving a frame for a wireless communications protocol. The embodiments extract a unique value from a tone mapping field in a preamble of the frame. The embodiments look up a resource block allocation for a portion of the tone space in a lookup table using the unique value. The embodiments map the tones of the portion of the tone space to one or more resource blocks based at least in part on the determined resource block allocation.
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Patent Agency Ranking
公开(公告)号：US20190150092A1
公开(公告)日：2019-05-16
申请号：US16244755
申请日：2019-01-10
Applicant: Apple Inc.
Inventor： Syed Aon Mujtaba , Joonsuk Kim
Abstract: This disclosure relates to low energy communication techniques. According to some embodiments, a wireless transmission may be received by a wireless device. The wireless transmission may include a physical layer (PHY) preamble and PHY data. The PHY preamble may include destination information indicating a destination and length information indicating a length (or duration) of the wireless transmission. The destination and length information may be included prior to a portion of the PHY preamble configured for channel estimation. The wireless device may determine whether the wireless transmission is destined to the wireless device based on the destination information. If the wireless transmission is not destined to the wireless device, the wireless device may drop a remainder of the wireless transmission.
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公开(公告)号：US10264602B2
公开(公告)日：2019-04-16
申请号：US15099055
申请日：2016-04-14
Applicant: Apple Inc.
Inventor： Guoqing Li , Joonsuk Kim , Christiaan A. Hartman , Syed Aon Mujtaba , Chiu Ngok E. Wong , Yong Liu , Su Khiong Yong
Abstract: Embodiments include a method, computer program product, and system for grouping electronic devices into contention groups to reduce uplink Orthogonal Frequency-Division Multiple Access (OFDMA) random access (OFDMA-RA) collisions. An access point may explicitly assign an electronic device to a contention group, or the electronic device may implicitly determine an assignment to the contention group. To explicitly assign a device to a contention group, the access point may randomly assign or assign based on a criteria of the electronic device. Examples of criteria include an association identifier (AID), a traffic type/quality of service (QoS) category, a power saving preference, and an association status. The electronic device may implicitly determine a contention group assignment based on the total number of contention groups. The electronic device may use the explicitly or implicitly assigned contention group number to determine whether the electronic device may contend for a given trigger frame random access (TF-R) frame.
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公开(公告)号：US20180368121A1
公开(公告)日：2018-12-20
申请号：US16113039
申请日：2018-08-27
Applicant: Apple Inc.
Inventor： Awais M. Hussain , Tarik Tabet , Syed Aon Mujtaba
CPC classification number: H04W72/042 , H04L5/0053
Abstract: This disclosure relates to techniques for transmitting and receiving control information in the common search space on an enhanced physical downlink control channel (EPDCCH). According to some embodiments, a cellular base station may allocate some resource blocks of a subframe as the EPDCCH. The cellular base station may provide control information on a common search space in the EPDCCH for wireless user equipment (UE) devices in the cell provided by the cellular base station during a subframe. A UE device may monitor the EPDCCH to determine whether any indication on the common search space decodable by the UE device is contained in the EPDCCH, and may decode such information if present.
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公开(公告)号：US20180364338A1
公开(公告)日：2018-12-20
申请号：US16041874
申请日：2018-07-23
Applicant: Apple Inc.
Inventor： Syed Aon Mujtaba , Xiaowen Wang
CPC classification number: G01S7/4865 , G01S5/145 , G01S11/02 , G01S11/08 , G01S17/102 , H04L1/0004 , H04L27/0008 , H04L27/18 , H04L27/2607 , H04L27/2613 , H04L27/2662 , H04L27/2675 , H04L27/2692 , H04L27/34 , H04W4/023 , H04W64/00 , H04W64/003
Abstract: Some embodiments relate to a waveform design for time-of-flight estimation in a wireless communication system. The waveform may include a number N of signal tones, wherein the number N of signal tones is greater than a number M of signal tones that the receiving wireless device is configured to decode. Upon receipt of the waveform, the receiving wireless device may store a timestamp which indicates a time of receipt of the waveform. The receiving wireless device may decode M of the N signal tones. For example, the receiving wireless device may decode the middle M signal tones of the N signal tones. One or more of the transmitting or receiving wireless devices may then estimate a distance between them based at least in part on the timestamp.
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公开(公告)号：US20180279381A1
公开(公告)日：2018-09-27
申请号：US15989864
申请日：2018-05-25
Applicant: Apple Inc.
Inventor： Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba
IPC: H04W74/08
Abstract: Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device.
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