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公开(公告)号：US20230397054A1
公开(公告)日：2023-12-07
申请号：US18451686
申请日：2023-08-17
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 , H04W52/0235
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：US11212846B2
公开(公告)日：2021-12-28
申请号：US16791157
申请日：2020-02-14
Applicant: Apple Inc.
Inventor： Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba
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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公开(公告)号：US10903943B2
公开(公告)日：2021-01-26
申请号：US14729285
申请日：2015-06-03
Applicant: Apple Inc.
Inventor： Tarik Tabet , Youngjae Kim , Syed Aon Mujtaba
Abstract: Mobile devices, base stations, and/or relay stations may implement a method for an improved and reliable automatic repeat request feedback indication. A mobile device (UE) may establish communication within a wireless network, and indicate to the network that the UE is a special type device, e.g. a constrained device. The network (base station) may then not send an indication on a physical indicator channel to the UE when certain conditions are met, and instead, the mobile device may interpret control information received from the network on a physical control channel as a negative acknowledgment indication corresponding to an automatic repeat request from the network. The UE may then perform a retransmission according to the interpreted control information. A new control information format may be used to further define how the network and UE implement the automatic repeat request process, to reduce the total number of bits required in the control information.
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公开(公告)号：US20200374769A1
公开(公告)日：2020-11-26
申请号：US16991814
申请日：2020-08-12
Applicant: Apple Inc.
Inventor： Tarik Tabet , Farouk Belghoul , Samy Khay-Ibbat , Sarma V. Vangala , Rafael L. Rivera-Barreto , David Boettger , Awais M. Hussain , Syed Aon Mujtaba
IPC: H04W36/00 , H04B17/336 , H04B17/382
Abstract: This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.
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公开(公告)号：US20200023413A1
公开(公告)日：2020-01-23
申请号：US16587200
申请日：2019-09-30
Applicant: Apple Inc.
Inventor： Farouk Belghoul , Lydi Smaini , Tarik Tabet , Syed Aon Mujtaba
IPC: B08B3/08 , H04W16/14 , H04W28/08 , H04W72/04 , B08B3/02 , B08B3/04 , F16H57/01 , G01N27/90 , H04W72/12
Abstract: A wireless communication device (UE) may monitor grants received from respective cells associated with one or more first (e.g. licensed) frequency band(s) and one or more second (e.g. unlicensed) frequency band(s). Based on the received grants the UE may determine if an imbalance exists in the radio resource allocation, whereby the UE communicates more than intended in the second frequency band(s). The imbalance may be specified with respect to the ratio or portion of the communications that are conducted in the second frequency band(s) with respect to all wireless communications of the UE. If the UE detects an imbalance, it may transmit a report to the network (e.g. to the base station serving the UE) indicating unfavorable conditions for the UE to be operating in the second frequency band(s). In response, the network may disable the respective cell(s) associated with the second frequency band(s) and/or it may disable carrier aggregation for the UE.
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Patent Agency Ranking
公开(公告)号：US10542535B2
公开(公告)日：2020-01-21
申请号：US16145030
申请日：2018-09-27
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.
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公开(公告)号：US10531307B2
公开(公告)日：2020-01-07
申请号：US15430664
申请日：2017-02-13
Applicant: Apple Inc.
Inventor： Farouk Belghoul , Lydi Smaini , Tarik Tabet , Syed Aon Mujtaba
Abstract: A wireless communication device may conduct first wireless communications over a first frequency band according to a first radio access technology (RAT), and may detect second wireless communications conducted over the first frequency band according to a second RAT while the wireless communication device is conducting the first wireless communications. The wireless communication device may then adjust characteristics and/or parameters associated with the first wireless communications based on the detected second wireless communications. In a specific example, a wireless communication device conducting Wi-Fi communications in the 5 GHz band may detect cellular communications (e.g. LAA/LTE-U communications) also conducted in the 5 GHz band while the wireless communication device is conducting the Wi Fi communications. The wireless communication device may then adjust characteristics and/or parameters associated with its Wi-Fi communications based on the detected signals/frequencies of the cellular (LAA/LTE-U) communications.
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公开(公告)号：US10476639B2
公开(公告)日：2019-11-12
申请号：US15146087
申请日：2016-05-04
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 assign resource blocks to user receiver devices in a wireless communications protocol. For example, the method can receive a frame for a wireless communications protocol. The method can also extract a unique value from a tone mapping field in a preamble of the frame. The method can also look up a resource block allocation for a portion of the tone space in a lookup table using the unique value. Further, the method can extract an assignment field from the preamble based on the determined resource block allocation. The method can also determine an assigned resource block number based on the assignment field. The method can also assign a resource block corresponding to the assigned resource block number to a user receiver device.
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公开(公告)号：US10271283B2
公开(公告)日：2019-04-23
申请号：US15151990
申请日：2016-05-11
Applicant: APPLE INC.
IPC: H04W52/02
Abstract: An apparatus, system and method for determining whether a battery alarm of a UE is asserted, reducing a transmission duty cycle of the UE to zero for a first predetermined time period when the battery alarm is asserted, determining whether the battery alarm has been de-asserted after the first predetermined time period and when the battery alarm has not been de-asserted, increasing the transmission duty cycle to a first threshold level for a second predetermined time period, wherein the first threshold level is less than a full transmission duty cycle of the UE. When the battery alarm has been de-asserted, increasing the transmission duty cycle to a second threshold level for a third predetermined time period, wherein the second threshold level is less than the full transmission duty cycle of the UE, and wherein the second threshold level is greater than the first threshold level.
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公开(公告)号：US20190110322A1
公开(公告)日：2019-04-11
申请号：US16214474
申请日：2018-12-10
Applicant: Apple Inc.
Inventor： Syed Aon Mujtaba , Tarik Tabet , Awais M. Hussain
Abstract: This disclosure relates to accommodating link budget constrained wireless devices performing random access procedures. A base station may detect a preamble message from a wireless device. It may be determined that the preamble message is received from a link budget constrained wireless device. Characteristics of a response message may be selected based at least in part on determining that the preamble message is received from a link budget constrained wireless device. The response message may be transmitted to the link budget constrained wireless device using the selected characteristics.
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