Non-PDCCH signaling of SIB resource assignment

    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.

    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.

    Enhanced physical downlink control channel supporting common search space

    公开(公告)号:US10064170B2

    公开(公告)日:2018-08-28

    申请号:US15076967

    申请日:2016-03-22

    Applicant: Apple Inc.

    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.

    Packet-Switched Wireless Communication for Link Budget Limited Wireless Devices
    34.
    发明申请
    Packet-Switched Wireless Communication for Link Budget Limited Wireless Devices 审中-公开
    链路预算有限的无线设备的分组交换无线通信

    公开(公告)号:US20160345217A1

    公开(公告)日:2016-11-24

    申请号:US15153676

    申请日:2016-05-12

    Applicant: Apple Inc.

    CPC classification number: H04W36/0083 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.

    Abstract translation: 本公开涉及用于链路预算有限UE以改善与蜂窝网络的通信性能的技术。 UE可以执行信噪比(SINR)测量,并且使用这些测量来调整提供给蜂窝网络的接收信号功率值作为接收信号功率测量。 UE可以至少部分地基于SINR测量生成接收信号功率值,以便当UE具有良好的SINR但接收信号功率较差时,减少切换的可能性。 UE还可以向基站提供优选配置信息,其在链路预算受限时增强了UE的性能。 配置信息可以指定被设计成为链路预算限制设备提供改进的性能的一个或多个参数值。

    System Information Signaling for Link Budget Limited Wireless Devices

    公开(公告)号:US20220338181A1

    公开(公告)日:2022-10-20

    申请号:US17856770

    申请日:2022-07-01

    Applicant: Apple Inc.

    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.

    Device Category in 3GPP Communications

    公开(公告)号:US20220240127A1

    公开(公告)日:2022-07-28

    申请号:US17722033

    申请日:2022-04-15

    Applicant: Apple Inc.

    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.

    Stopping criteria for turbo decoder

    公开(公告)号:US10567008B2

    公开(公告)日:2020-02-18

    申请号:US15174413

    申请日:2016-06-06

    Applicant: Apple Inc.

    Abstract: This disclosure relates to providing negative stopping criteria for turbo decoding for a wireless device. A device may wirelessly receive turbo coded data. Turbo decoding may be performed on the turbo coded data. Performing turbo decoding may use one or more negative stopping criteria for early termination of the turbo decoding for each code block of the turbo coded data. The negative stopping criteria may be selected to terminate the turbo decoding of a code block early under poor wireless medium conditions. Turbo decoding of a code block may be terminated early if the one or more negative stopping criteria for the code block are met.

    Device Category in 3GPP Communications
    40.
    发明申请

    公开(公告)号:US20200037206A1

    公开(公告)日:2020-01-30

    申请号:US16590866

    申请日:2019-10-02

    Applicant: Apple Inc.

    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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