公开(公告)号：US09490764B2

公开(公告)日：2016-11-08

申请号：US14689615

申请日：2015-04-17

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Steven Ferrante ,  Philip J. Pietraski

IPC: H04B1/16 ,  H03G3/30 ,  H04B1/28 ,  H04B1/10

CPC classification number: H03G3/20 ,  H03G3/3042 ,  H03G3/3078 ,  H04B1/1027

Abstract: A method and apparatus for use in a packet based wireless communication system for reducing automatic gain control (AGC) convergence time at a receiver are described. A radio frequency (RF) signal is received. The RF signal includes a sequence of a plurality of pre-defined power levels at a beginning of a preamble of the RF signal. Statistics for each of the plurality of pre-defined power levels at the beginning of the preamble of the RF signal are computed. An appropriate gain for a variable gain amplifier (VGA) is then computed based on the computed statistics for each of the plurality of pre-defined power levels and a-priori information related to transmission power differences between the plurality of pre-defined power levels of the sequence.

Abstract translation: 描述了一种在基于分组的无线通信系统中用于减少接收机处的自动增益控制（AGC）收敛时间的方法和装置。 接收射频（RF）信号。 RF信号包括在RF信号的前导码的开始处的多个预定义功率电平的序列。 计算在RF信号的前导码开始处的多个预定义功率电平中的每一个的统计。 然后基于用于多个预定义功率电平中的每一个的计算统计量和与多个预定义功率电平的多个预定义功率电平之间的发射功率差有关的先验信息来计算用于可变增益放大器（VGA）的适当增益， 序列。

公开(公告)号：US20160241325A1

公开(公告)日：2016-08-18

申请号：US15142903

申请日：2016-04-29

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Balaji Raghothaman ,  Ravikumar V. Pragada ,  Gregory S. Sternberg ,  Kiran K. Vanganuru ,  Tao Deng ,  Zhuorong Deng ,  Hongsan X. Sheng ,  Steven Ferrante

IPC: H04B7/155 ,  H04W76/04 ,  H04W72/04 ,  H04W40/22 ,  H04W76/02

CPC classification number: H04B7/15507 ,  H04W36/00 ,  H04W36/08 ,  H04W40/22 ,  H04W72/04 ,  H04W72/0406 ,  H04W76/10 ,  H04W76/12 ,  H04W76/14 ,  H04W76/25 ,  H04W76/27 ,  H04W88/04

Abstract: A method and apparatus for cross link (XL) establishment and maintenance are disclosed in which the XL enables direct communication between the LTE WTRU and the another LTE WTRU. In the method and apparatus, a XL between a Long Term Evolution (LTE) terminal wireless transmit/receive unit (T-WTRU) and an LTE helper WTRU (H-WTRU) is established and maintained. The T-WTRU is configured to maintain the XL while in an XL-idle substate in which data communication on the XL is disabled. A receiver of the T-WTRU is configured to receive a first keep alive message on the XL in the XL-idle substate, and, on a condition that the first keep alive message is received, at least one processor of the T-WTRU is configured to maintain the XL.

Abstract translation: 公开了一种用于交叉链路（XL）建立和维护的方法和装置，其中XL使得能够在LTE WTRU与另一LTE WTRU之间进行直接通信。 在该方法和装置中，建立并维护长期演进（LTE）终端无线发射/接收单元（T-WTRU）与LTE辅助WTRU（H-WTRU）之间的XL。 T-WTRU被配置为在XL中的数据通信被禁用的XL-空闲子状态中维护XL。 T-WTRU的接收机被配置为在XL空闲子状态中在XL上接收第一保持活动消息，并且在接收到第一保持活动消息的条件下，T-WTRU的至少一个处理器是 配置为维护XL。

公开(公告)号：US09357459B2

公开(公告)日：2016-05-31

申请号：US14363457

申请日：2012-12-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Balaji Raghothaman ,  Ravikumar V. Pragada ,  Zhuorong Deng ,  Tao Deng ,  Gregory S. Sternberg ,  Kiran K. Vanganuru ,  Hongsan Sheng ,  Steven Ferrante

IPC: H04W36/08 ,  H04W76/02 ,  H04W72/04 ,  H04W36/00 ,  H04W88/04 ,  H04W76/04

CPC classification number: H04B7/15507 ,  H04W36/00 ,  H04W36/08 ,  H04W40/22 ,  H04W72/04 ,  H04W72/0406 ,  H04W76/10 ,  H04W76/12 ,  H04W76/14 ,  H04W76/25 ,  H04W76/27 ,  H04W88/04

Abstract: A method and apparatus for cross link (XL) establishment are disclosed. In the method and apparatus, a XL between a terminal wireless transmit/receive unit (T-WTRU) and a helper WTRU (H-WTRU) is established. The T-WTRU and the H-WTRU may be configured to operate in a plurality of RRC states and a plurality of RRC substates. To establish the XL, neighbor discovery, association information exchange, and a H-WTRU selection may be performed. Radio resource control (RRC) configuration of the T-WTRU and the H-WTRU may also be performed. In the method and apparatus, coverage for a T-WTRU may be handed over between a network and a H-WTRU or between two H-WTRUs.

Abstract translation: 公开了一种用于交叉（XL）建立的方法和装置。 在该方法和装置中，建立终端无线发射/接收单元（T-WTRU）和辅助WTRU（H-WTRU）之间的XL。 T-WTRU和H-WTRU可以被配置为在多个RRC状态和多个RRC子状态中操作。 为了建立XL，可以执行邻居发现，关联信息交换和H-WTRU选择。 也可以执行T-WTRU和H-WTRU的无线电资源控制（RRC）配置。 在该方法和装置中，T-WTRU的覆盖可以在网络和H-WTRU之间或两个H-WTRU之间切换。

公开(公告)号：US20240388334A1

公开(公告)日：2024-11-21

申请号：US18781355

申请日：2024-07-23

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Steven Ferrante ,  Arnab Roy ,  Philip J. Pietraski ,  Ravikumar V. Pragada

IPC: H04B7/0452 ,  H04B7/0408 ,  H04W72/20 ,  H04W72/56

Abstract: A method and apparatus are disclosed for communication in a Millimeter Wave Hotspot (mmH) backhaul system which uses mesh nodes. A mmH mesh node may receive a control signal which includes a total number of available control slots. The mesh node may determine the number of iterations of a resource scheduling mechanism that can be made during the time period of all available control slots, based on the number of neighbor nodes for the mesh node. Further, the mesh node may receive control slot information, including information about traffic queues and priorities. The mesh node may then perform resource scheduling using the resource scheduling mechanism based on the currently received control slot information and control slot information received in previous iterations of resource scheduling. The mesh node may also adjust a preamble based on a time between a last packet transmission and a current packet transmission to a neighboring node.

公开(公告)号：US20240236883A1

公开(公告)日：2024-07-11

申请号：US18615135

申请日：2024-03-25

Applicant: Interdigital Patent Holdings, INC.

Inventor： Kyle Jung-Lin Pan ,  Fengiun xi ,  Steven Ferrante ,  Chunxuan ye ,  Janet A. Stem-Berkowitz ,  Nirav B. Shah

IPC: H04W56/00 ,  H04L1/00 ,  H04L1/1829 ,  H04L5/00 ,  H04L5/10 ,  H04W72/044

CPC classification number: H04W56/001 ,  H04L1/0071 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/10 ,  H04W72/046 ,  H04W72/0466

Abstract: A method and apparatus are disclosed for demodulating a NR-PBCH signal. The method may comprise receiving a primary SS and an SSS. The received SSS signal may be used as a reference signal to detect demodulation reference signals of the NR-PBCH. These demodulation reference signals may be interleaved with data on the NR-PBCH. In one method, the NR-PBCH DMRS are associated with an SSB index in an effort to improve randomization in the synchronization process. The NR-PBCH payload may be demodulated using the PSS and/or SSS and the DMRS. In one embodiment, the NR-PBCH DMRS may mapped to DMRS REs on a frequency first and time second mapping basis.

公开(公告)号：US20180176065A1

公开(公告)日：2018-06-21

申请号：US15735327

申请日：2016-06-24

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Tao Deng ,  Steven Ferrante ,  Ravikumar V. Pragada ,  Yugeswar Deenoo ,  Daniel R. Cohen ,  Janet A. Stern-Berkowitz ,  Moon-il Lee ,  Mihaela C. Beluri

IPC: H04L27/26 ,  H04W48/16 ,  H04W56/00 ,  H04B7/08 ,  H04W48/12 ,  H04B7/06

CPC classification number: H04L27/2673 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/088 ,  H04L27/2666 ,  H04W48/12 ,  H04W48/16 ,  H04W56/001

Abstract: Methods and apparatus for initial cell search and selection using beamforming are described. An apparatus is configured with multiple receive beams and includes an antenna and a processor. The processor is operatively coupled to the antenna and sweeps a respective one of the multiple receive beams during each of multiple synchronization sub-frames, using a pre-defined sweep time and dwell period, to detect a synchronization signal. The processor also obtains symbol timing information and a synchronization signal index from the detected synchronization signal. The obtained synchronization signal index corresponds to a synchronization signal index of the set. The process decodes a first broadcast channel using the obtained symbol timing information, the obtained synchronization signal index and a predefined or blind-coded symbol distance between the detected synchronization signal and the first broadcast channel. The process decodes a second broadcast channel using information obtained from decoding the first broadcast channel.