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750 条记录 (耗时 0.042 秒)

    Method and apparatus for power control of first data transmission in random access procedure of FDMA communication system
    72.
    发明授权
    Method and apparatus for power control of first data transmission in random access procedure of FDMA communication system 有权

    公开(公告)号：US09860850B2

    公开(公告)日：2018-01-02

    申请号：US15225697

    申请日：2016-08-01

    申请人： QUALCOMM Incorporated

    发明人： Wanshi Chen ,  Juan Montojo ,  Arnaud Meylan

    IPC分类号： H04W52/14 ,  H04W52/16 ,  H04W52/50 ,  H04W52/36

    CPC分类号： H04W52/146 ,  H04W52/16 ,  H04W52/367 ,  H04W52/50

    摘要： Transmit power is controlled for a first uplink data transmission on Physical Uplink Shared Channel (PUSCH) during random access channel (RACH) procedure. Power control adjustment for the first PUSCH transmission is performed relative to the power spectral density used for successful PRACH transmission as adjusted for bandwidth difference, etc. The uplink Physical random access channel carries the RACH information that is transmitted by the user equipment (UE) during registrations or base station originated calls. A PRACH is composed of a number of preambles and a message portion. The preambles are a series of radio frequency power “steps” that increase in power according to the power step setting until the maximum number of preambles is reached or the base station acknowledges. Once the UE receives a positive indication, it transmits the message portion of the PRACH which consists of message data and control data with independent power gain control.

    EDGE TRANSCEIVER FOR IN-BAND ON-CHANNEL BROADCASTING (IBOC) MESH NETWORK
    73.
    发明申请
    EDGE TRANSCEIVER FOR IN-BAND ON-CHANNEL BROADCASTING (IBOC) MESH NETWORK 有权

    公开(公告)号：US20170374630A1

    公开(公告)日：2017-12-28

    申请号：US15700872

    申请日：2017-09-11

    申请人： iHeartMedia Management Services, Inc.

    发明人： Jeffrey Lee Littlejohn

    IPC分类号： H04W52/32 ,  H04W52/16 ,  H04W52/28 ,  H04W52/24 ,  H04W52/14 ,  H04W84/18

    CPC分类号： H04W52/322 ,  H04W52/143 ,  H04W52/16 ,  H04W52/24 ,  H04W52/245 ,  H04W52/283 ,  H04W72/005 ,  H04W84/18

    摘要： Digital content can be broadcast in a sideband of an analog broadcast channel using multiple digital in-band on-channel (IBOC) transceivers connected in a mesh configuration to form an IBOC mesh network. The digital IBOC transceivers are positioned at various geographic locations, so that unlike traditional “HD” radio broadcasts, the IBOC broadcast transmission is spread out over a wide area, using multiple low power digital IBOC transceivers rather than being broadcast from the same location as the analog signal. An edge transceiver can limit IBOC transmission power of the IBOC transceivers to a desired portion of the power used to broadcast the analog signal. The edge server can make this determination based on measurements taken at the geographically distributed digital IBOC transceivers. The IBOC mesh network provides bi-directional communication between a mesh transceiver and a user device, and can be used to deliver user feedback.

    Methods and Apparatuses for Transmit Power Control of a Mobile Terminal in a Dual Connectivity Mode
    75.
    发明申请
    Methods and Apparatuses for Transmit Power Control of a Mobile Terminal in a Dual Connectivity Mode 审中-公开

    公开(公告)号：US20170347327A1

    公开(公告)日：2017-11-30

    申请号：US15678294

    申请日：2017-08-16

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Imadur Rahman ,  Ali Behravan

    IPC分类号： H04W52/36 ,  H04W52/24 ,  H04W52/28 ,  H04W52/16 ,  H04W52/14 ,  H04W52/34

    摘要： Embodiments herein relate to a method for controlling transmit power of a mobile terminal. The method is performed by a mobile terminal in a dual connectivity mode wherein the mobile terminal is configured to support two or more contemporaneous links, including a first link and a second link, with two or more wireless network access points. The mobile terminal independently calculates a respective unscaled uplink transmission power level for each link, based on a corresponding link-specific value. The mobile terminal calculates a respective scaling factor for each link based on a total-power constraint and on one or more of the following: uplink resource allocation to each link, such that the scaling factor for the first link allocated more resources than the second link is larger than the scaling factor for the second link, link quality for each link, such that the scaling factor for the first link having a better link quality than the second link is larger than the scaling factor for the second link, uplink buffer state for each link, such that the scaling factor for the first link having more uplink data to be sent than the second link is larger than the scaling factor for the second link, and priority for each link, such that the scaling factor for the first link having a higher priority than the second link is larger than the scaling factor for the second link. The mobile terminal further applies the respective scaling factor to each respective unscaled uplink transmission power level, to obtain corresponding scaled power levels. The mobile terminal furthermore transmits over the two or more contemporaneous links at the respective scaled power levels.

    Adjustment of transmit power parameter
    77.
    发明授权
    Adjustment of transmit power parameter 有权

    公开(公告)号：US09763206B2

    公开(公告)日：2017-09-12

    申请号：US15293244

    申请日：2016-10-13

    申请人： AT&T Mobility II LLC

    发明人： Vladimir Gusavac ,  Manish Vaishnav

    IPC分类号： H04B7/00 ,  H04W52/36 ,  H04W52/14 ,  H04W52/16 ,  H04W52/26 ,  H04W52/34

    CPC分类号： H04W52/367 ,  H04W52/143 ,  H04W52/16 ,  H04W52/265 ,  H04W52/346 ,  H04W52/365

    摘要： Adjustment of a downlink transmit power parameter, such as a ceiling level, is disclosed. Signal-to-noise type information and committed power information can be employed to determine the ceiling level adjustment. A ceiling level can be a predetermined cap on transmission power for downlink channels between a user equipment and a base station. Where there is sufficient headroom in total transmission power and a power level greater than the predetermined ceiling can be effective, the ceiling can be adjusted to greater values than the predetermined value. Where total transmission power is more committed, ceiling adjustment can be prevented. Further, where there is no adequate benefit from increasing the ceiling, the adjustment of the ceiling can be prevented. While some instances can result in optimized transmission levels below the ceiling, instances can also be accommodated where the ceiling is to be increased.

    Control channel indication based on power level
    78.
    发明授权
    Control channel indication based on power level 有权

    公开(公告)号：US09749113B1

    公开(公告)日：2017-08-29

    申请号：US14496762

    申请日：2014-09-25

    申请人： Sprint Spectrum L.P.

    发明人： Suryanarayanan Ramamurthy ,  Deveshkumar Rai ,  Naresh Madineni

    IPC分类号： H04L5/00 ,  H04J3/16 ,  H04J11/00 ,  H04W52/24 ,  H04W52/16

    CPC分类号： H04L5/0073 ,  H04J3/1694 ,  H04J11/005 ,  H04L5/0007 ,  H04W52/16 ,  H04W52/243 ,  H04W52/325

    摘要： An example embodiment may involve defining a time-division multiplexed, orthogonal frequency-division multiplexed wireless air interface containing a primary signaling channel. The primary signaling channel may be formed by a first set of modulation symbols that are allocated to a fixed time position of each time-division multiplexed subframe across a plurality of contiguous subcarrier frequencies. A first set of the subcarrier frequencies may be powered at a first level and a second set of subcarrier frequencies may be powered at a second level. The example embodiment may also involve defining a secondary signaling channel. The secondary signaling channel may be formed in the air interface by a second set of modulation symbols that are allocated to dynamic time positions on the first set of the subcarrier frequencies. The example embodiment may further involve transmitting signaling messages to one or more WCDs via the secondary signaling channel.