公开(公告)号：US11950242B2

公开(公告)日：2024-04-02

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: H04W72/00 ,  H04W72/23 ,  H04W48/12

CPC classification number: H04W72/23 ,  H04W48/12

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：US11737118B2

公开(公告)日：2023-08-22

申请号：US17856770

申请日：2022-07-01

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Awais M. Hussain

IPC: H04W72/04 ,  H04W48/16 ,  H04W72/23 ,  H04W48/12

CPC classification number: H04W72/23 ,  H04W48/12 ,  H04W48/16

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 a master information block (MIB), a first system information block (SIB), and second SIBs. The first SIB and the second SIBs may be configured for different device categories, and may accordingly have different characteristics. For example, the first SIB may be configured for link budget limited devices, and may include information specific to such devices and/or may exclude information not relevant to such devices or not critical to accessing the cell. In some instances, the first SIB may also include information from the MIB, such that at least some devices may be able to decode the first SIB and gain cell access without decoding the MIB.

公开(公告)号：US20220190954A1

公开(公告)日：2022-06-16

申请号：US17686050

申请日：2022-03-03

Applicant: Apple Inc.

Inventor： Awais M. Hussain ,  Tarik Tabet ,  Lydi Smaini ,  Moustafa M. Elsayed

IPC: H04L1/00 ,  H04L5/00

Abstract: A user equipment device (UE) may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and additional optimization requirements. The UE may use physical channels and procedures (e.g. it may receive and decode control channels) in a manner compatible with and not infringing on the operation of other UEs operating in the same network, while allowing the network more flexibility to assign resources. Specifically, resources for EPDCCH on UE-specific SS and EPDCCH on common SS may be shared. That is, the resources for two search spaces may be overlaid partially or in full, giving the network more flexibility in allocating resources. Furthermore the DCI formats for MPDCCH may be extended to devices operating according to the new device category, which enables the coverage enhancement of MTC for these devices.

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

IPC: H04W72/04 ,  H04L5/00

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.

公开(公告)号：US10383063B2

公开(公告)日：2019-08-13

申请号：US16104919

申请日：2018-08-19

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Samy Khay-Ibbat ,  Awais M. Hussain

IPC: H04W52/24 ,  H04W72/04 ,  H04L5/00 ,  H04W52/26 ,  H04W52/32 ,  H04W72/08

Abstract: A link-budget-limited wireless communication device (UE) may implement improved radio link monitoring procedures for enhancing the link-budget of the UE. The UE may monitor the radio link and may determine whether the radio link can support a lowest acceptable link quality according to a hysteresis-based comparison that uses threshold values to determine error rates associated with a physical control channel. The UE may also identify itself to the network as a link-budget-limited device, and the network may enable special link-budget enhancing features for the UE, including boosting the power of the resource elements (REs) carrying physical channel signaling/data to the UE. The UE may detect the presence of power boost and may estimate/determine the power boost level. The UE may modify the threshold values based on the power boost detection and/or results of the power boost level estimation/determination, and may use the modified threshold values for determining radio link quality during radio link monitoring.

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

IPC: H04W72/04 ,  H04L5/00

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.

公开(公告)号：US20180227911A1

公开(公告)日：2018-08-09

申请号：US15887798

申请日：2018-02-02

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Christian W. Mucke ,  Awais M. Hussain

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12

Abstract: This disclosure relates to performing cellular communication in unlicensed spectrum using a flexible slot structure. A cellular base station may perform a listen-before-talk procedure, and may transmit a reservation frame when the listen-before-talk procedure is successful. The reservation frame may reserve a wireless medium for a transmit opportunity. Transmission slots may be scheduled for communication with one or more wireless devices during the transmit opportunity. The transmission slots may be selected from multiple possible uplink transmission slot types and multiple possible downlink transmission slot types. Indications of the scheduled transmission slots, including indications of slot types of the scheduled transmission slots, may be provided to the wireless devices. Wireless communication may be performed between the cellular base station and the wireless devices according to the scheduled transmission slots.

公开(公告)号：US20170339681A1

公开(公告)日：2017-11-23

申请号：US15598470

申请日：2017-05-18

Applicant: Apple Inc.

Inventor： Awais M. Hussain ,  Tarik Tabet ,  Lydi Smaini ,  Moustafa M. Elsayed

IPC: H04W72/04 ,  H04B7/0452

CPC classification number: H04L1/0038 ,  H04L1/0045 ,  H04L5/0053 ,  H04L5/0092

Abstract: A user equipment device (UE) may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and additional optimization requirements. The UE may use physical channels and procedures (e.g. it may receive and decode control channels) in a manner compatible with and not infringing on the operation of other UEs operating in the same network, while allowing the network more flexibility to assign resources. Specifically, resources for EPDCCH on UE-specific SS and EPDCCH on common SS may be shared. That is, the resources for two search spaces may be overlaid partially or in full, giving the network more flexibility in allocating resources. Furthermore the DCI formats for MPDCCH may be extended to devices operating according to the new device category, which enables the coverage enhancement of MTC for these devices.

公开(公告)号：US09681395B2

公开(公告)日：2017-06-13

申请号：US15349816

申请日：2016-11-11

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Samy Khay-Ibbat ,  Awais M. Hussain

IPC: H04B7/00 ,  H04W52/24 ,  H04W72/08 ,  H04L5/00 ,  H04W52/26 ,  H04W72/04

CPC classification number: H04W52/241 ,  H04L5/005 ,  H04L5/0057 ,  H04W52/262 ,  H04W52/32 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/085

Abstract: A link-budget-limited wireless communication device (UE) may implement improved radio link monitoring procedures for enhancing the link-budget of the UE. The UE may monitor the radio link and may determine whether the radio link can support a lowest acceptable link quality according to a hysteresis-based comparison that uses threshold values to determine error rates associated with a physical control channel. The UE may also identify itself to the network as a link-budget-limited device, and the network may enable special link-budget enhancing features for the UE, including boosting the power of the resource elements (REs) carrying physical channel signaling/data to the UE. The UE may detect the presence of power boost and may estimate/determine the power boost level. The UE may modify the threshold values based on the power boost detection and/or results of the power boost level estimation/determination, and may use the modified threshold values for determining radio link quality during radio link monitoring.

公开(公告)号：US20160295558A1

公开(公告)日：2016-10-06

申请号：US15076967

申请日：2016-03-22

Applicant: Apple Inc.

Inventor： Awais M. Hussain ,  Tarik Tabet ,  Syed Aon Mujtaba

IPC: H04W72/04

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.

Abstract translation: 本公开涉及在增强物理下行链路控制信道（EPDCCH）上在公共搜索空间中发送和接收控制信息的技术。 根据一些实施例，蜂窝基站可以将子帧的一些资源块分配为EPDCCH。 蜂窝基站可以在子帧期间由蜂窝基站提供的小区中的无线用户设备（UE）设备的EPDCCH中的公共搜索空间提供控​​制信息。 UE设备可以监视EPDCCH以确定在EPDCCH中是否包含由UE设备解码的公共搜索空间上的任何指示，并且如果存在则可以解码该信息。