公开(公告)号：US10341992B2

公开(公告)日：2019-07-02

申请号：US15972960

申请日：2018-05-07

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Benoit Pelletier ,  Lujing Cai ,  Hong O. Zhang ,  Fengjun Xi ,  Joseph S. Levy

IPC: H04W52/48 ,  H04W72/04 ,  H04B7/0404 ,  H04L27/26 ,  H04L25/03 ,  H04L5/00 ,  H04W52/42 ,  H04B7/06 ,  H04W52/32 ,  H04J13/16 ,  H04W52/40 ,  H04W52/38 ,  H04W52/36 ,  H04W52/28 ,  H04W52/16

Abstract: A method and apparatus for transmitting using beam are disclosed. A wireless transmit/receive unit (WTRU) may transmit a first physical random access channel (PRACH) preamble to a base station using a first beam at a first power level. The WTRU may receive an indication that the first PRACH preamble was received by the base station. If the indication was received, the WTRU may transmit data. If the indication was not received, the WTRU may select the first beam or a second beam to use for a second PRACH preamble. Further, the first and second beams may be different beams. If the first beam is selected, the WTRU may increase a transmission power level of the second PRACH preamble by a first power ramp step. If the second beam is selected, the WTRU may not increase the transmission power level of the second PRACH preamble by the first power ramp step.

公开(公告)号：US09668241B2

公开(公告)日：2017-05-30

申请号：US13937290

申请日：2013-07-09

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Lujing Cai ,  Benoit Pelletier ,  Hong O. Zhang ,  Fengjun Xi ,  Yingxue K. Li ,  Christopher Cave ,  Yan Li

IPC: H04W72/02 ,  H04W72/04 ,  H04L1/16 ,  H04L5/00 ,  H04W52/32 ,  H04L1/00 ,  H04L1/08 ,  H04L1/18 ,  H04L25/03

CPC classification number: H04W72/04 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0073 ,  H04L1/08 ,  H04L1/1671 ,  H04L1/1812 ,  H04L5/0053 ,  H04L2025/03808 ,  H04W52/325

Abstract: Feedback information for multiple serving cells are transmitted on high speed dedicated physical control channel (HS-DPCCH). A slot format for transmitting feedback information is determined based on the number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the serving cells. Spreading factor is reduced to 128 when two secondary serving cells are configured and MIMO is configured in at least one of the two configured secondary serving cells, or when three secondary serving cells are configured. The serving cells are grouped into feedback groups, each feedback group having one or more serving cells. Channel coding may be applied to feedback information for the feedback groups. The resulting encoded feedback information for the feedback groups is concatenated to form composite feedback information.

公开(公告)号：US20160295530A1

公开(公告)日：2016-10-06

申请号：US15181498

申请日：2016-06-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Lujing Cai ,  Benoit Pelletier ,  Hong O. Zhang ,  Fengjun Xi

IPC: H04W52/42 ,  H04W52/14 ,  H04W52/08 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04W52/42 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0623 ,  H04W52/08 ,  H04W52/146

Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.

Abstract translation: 公开了一种用于动态地控制经由多个天线发送的传输流的发射功率的方法。 基于第一参考信道确定多个流的发射功率电平。 两个参考通道之间的信号与接口比（SIR）的差异可能代表功率偏移。 参考第一参考信道的增益因子，功率偏移可用于确定用于在次流上传输数据信道的增益因子。 功率偏移可以用于确定其他参数，例如在次流上承载的信道的服务授权或传输块大小。 功率偏移可以允许基于主流的发射功率电平确定次流上的信道的传输参数，以及通过主流发送的参考信道的增益因子。

公开(公告)号：US20160219568A1

公开(公告)日：2016-07-28

申请号：US15004342

申请日：2016-01-22

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Benoit Pelletier ,  Lujing Cai ,  Hong O. Zhang ,  Fengjun Xi ,  Joseph S. Levy

IPC: H04W72/04 ,  H04W52/32

CPC classification number: H04W72/0406 ,  H04B7/0404 ,  H04B7/0634 ,  H04B7/0678 ,  H04J13/16 ,  H04L5/0014 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/03942 ,  H04L25/03961 ,  H04L27/2613 ,  H04W52/16 ,  H04W52/286 ,  H04W52/325 ,  H04W52/367 ,  H04W52/386 ,  H04W52/40 ,  H04W52/42

Abstract: A method and an apparatus for transmitting pilots on multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) may transmit a primary dedicated physical control channel (DPCCH) and at least one secondary DPCCH via multiple antennas using different channelization codes. When a required transmit power exceeds a maximum allowed transmit power of the WTRU, power scaling may be applied equally to the primary DPCCH and the secondary DPCCH, such that a power ratio between the primary DPCCH and the secondary DPCCH remains the same before scaling as after scaling. The secondary DPCCH may include a same number of pilot bits as the primary DPCCH both in a normal mode and in a compressed mode, respectively. The same total pilot energy ratio may be maintained between the primary DPCCH and the secondary DPCCH both in a normal mode and in a compressed mode, respectively.

Abstract translation: 公开了一种用于在多个天线上发送导频的方法和装置。 无线发射/接收单元（WTRU）可以使用不同的信道化码通过多个天线发射主要专用物理控制信道（DPCCH）和至少一个辅助DPCCH。 当所需的发射功率超过WTRU的最大允许发射功率时，功率缩放可以平等地应用于主DPCCH和辅助DPCCH，使得主DPCCH和辅助DPCCH之间的功率比在缩放之后保持相同 缩放。 次级DPCCH可以分别包括与正常模式和压缩模式中的主DPCCH相同数量的导频位。 分别在正常模式和压缩模式下，在主DPCCH和辅助DPCCH之间可以保持相同的总导频能量比。

公开(公告)号：US20140140433A1

公开(公告)日：2014-05-22

申请号：US14035221

申请日：2013-09-24

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Lujing Cai ,  Benoit Pelletier ,  Hong O. Zhang ,  Fengjun Xi

IPC: H04W52/42

CPC classification number: H04W52/42 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0623 ,  H04W52/08 ,  H04W52/146

Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.

Abstract translation: 公开了一种用于动态地控制经由多个天线发送的传输流的发射功率的方法。 基于第一参考信道确定多个流的发射功率电平。 两个参考通道之间的信号与接口比（SIR）的差异可能代表功率偏移。 参考第一参考信道的增益因子，功率偏移可用于确定用于在次流上传输数据信道的增益因子。 功率偏移可以用于确定其他参数，例如在次流上承载的信道的服务授权或传输块大小。 功率偏移可以允许基于主流的发射功率电平确定次流上的信道的传输参数，以及通过主流发送的参考信道的增益因子。