公开(公告)号：WO2021222841A1

公开(公告)日：2021-11-04

申请号：PCT/US2021/030311

申请日：2021-04-30

Applicant: QUALCOMM INCORPORATED

Inventor： SAKHNINI, Iyab Issam ,  LUO, Tao ,  MONTOJO, Juan ,  WU, Qiang ,  CHEN, Wanshi ,  NAM, Wooseok ,  TAHERZADEH BOROUJENI, Mahmoud ,  HE, Linhai ,  KWON, Hwan Joon ,  ANG, Peter Pui Lok

IPC: H04L5/00 ,  H04W72/04

Abstract: Aspects described herein relate to receiving or determining an indication of multiple component carriers (CCs) configured wireless communications, communicating in a first bandwidth part (BWP) within a first one of the multiple CCs during a first time period, and communicating, based on a hopping pattern, in a second BWP within a second one of the multiple CCs during a second time period.

公开(公告)号：WO2021222184A1

公开(公告)日：2021-11-04

申请号：PCT/US2021/029310

申请日：2021-04-27

Applicant: QUALCOMM INCORPORATED

Inventor： MA, Jun ,  WU, Qiang ,  ZHANG, Dan ,  RICO ALVARINO, Alberto ,  WANG, Xiao Feng ,  MA, Liangping ,  GAAL, Peter ,  SAKHNINI, Iyab Issam

IPC: H04W56/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, user equipment (UE) may account for propagation delay when initiating a random access (RACH) procedure. For example, the UE may determine transmission timing for a RACH preamble based on an estimated propagation delay, such that the RACH preamble is received at a base station approximately at the beginning of a slot. To support reliable communication of the RACH preamble, the UE may implement a timing offset. In some examples, the base station may configure the UE with the timing offset using system information. Alternatively, the UE may be pre-configured with the timing offset. By determining the transmission timing for the RACH preamble further based on the timing offset, the UE may ensure that the RACH preamble is received at the base station after a slot boundary (e.g., avoiding causing interference to communications in a previous slot).

公开(公告)号：WO2021216150A2

公开(公告)日：2021-10-28

申请号：PCT/US2021/014687

申请日：2021-01-22

Applicant: QUALCOMM INCORPORATED

Inventor： SAKHNINI, Iyab Issam ,  MA, Jun ,  WU, Qiang ,  WANG, Xiao Feng ,  ZHANG, Dan ,  XU, Huilin

IPC: H04B7/185 ,  H04B7/0617 ,  H04B7/18513 ,  H04B7/18519 ,  H04B7/18543 ,  H04B7/1855 ,  H04B7/18563 ,  H04W48/12 ,  H04W52/143 ,  H04W52/146 ,  H04W52/42 ,  H04W68/005 ,  H04W72/042 ,  H04W84/06

Abstract: This disclosure provides systems, methods and apparatus for communicating a satellite behavior change. In one aspect, a satellite identifies a satellite behavior change to occur for the satellite of a non-terrestrial network for cellular communications. The apparatus also signals the satellite behavior change to a user equipment serviced by the satellite. In another aspect, a user equipment obtains, from a satellite servicing the user equipment, a signaling of a satellite behavior change to occur for the satellite. The user equipment also adjusts one or more user equipment parameters for cellular communication based on the obtained signaling. The satellite behavior change may include a satellite attitude or a transmit power or coverage area of one or more satellite beams. The user equipment parameters may include satellite or beam selection or reselection to listen to paging information, satellite or beam handover parameters, or transmit power control parameters.

公开(公告)号：WO2021211286A1

公开(公告)日：2021-10-21

申请号：PCT/US2021/024649

申请日：2021-03-29

Applicant: QUALCOMM INCORPORATED

Inventor： GURELLI, Mehmet Izzet ,  WU, Qiang ,  SUN, Jing ,  ZHANG, Xiaoxia ,  LUO, Tao ,  SAKHNINI, Iyab Issam ,  MA, Jun ,  ZEWAIL, Ahmed Abdelaziz Ibrahim Abdelaziz ,  MONTOJO, Juan ,  GAAL, Peter

IPC: H04L27/26

Abstract: Orthogonal frequency-division multiplexing (OFDM) numerologies that maintain symbol boundary alignment while distributing excess cyclic prefixes (CPs) among OFDM symbols. Communication is established using a first sub-carrier spacing (SCS) and a first OFDM numerology, such as an exemplary numerology that distributes excess CP duration among a set of symbols that occupy a time interval corresponding to a time interval of a symbol of a second OFDM numerology with a second lower SCS. The first SCS may be, e.g., 960 kHz. The second SCS may be, e.g., 120 kHz. Another exemplary OFDM numerology described herein distributes the excess CP as prefix and postfix portions to one of the symbols, such as the first symbol of a set. Communication then proceeds using the first OFDM numerology at the first SCS and, in illustrative examples, using the second OFDM numerology at the second SCS or other OFDM numerologies at other SCSs.

公开(公告)号：WO2021207677A1

公开(公告)日：2021-10-14

申请号：PCT/US2021/026684

申请日：2021-04-09

Applicant: QUALCOMM INCORPORATED

Inventor： SAKHNINI, Iyab Issam ,  LUO, Tao ,  WU, Qiang ,  MA, Jun ,  ZHANG, Xiaoxia ,  SUN, Jing ,  MONTOJO, Juan ,  GAAL, Peter ,  GURELLI, Mehmet Izzet ,  ZEWAIL, Ahmed Abdelaziz Ibrahim Abdelaziz

IPC: H04L5/00 ,  H04W72/04

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for determining quasi co-location (QCL) and/or transmission configuration information (TCI) state assumption information for a dynamic control resource set (CORESET). In some cases, if certain conditions are met, a user equipment (UE) may follow QCL assumptions for a physical downlink shared channel (PDSCH) scheduled by a same PDCCH that indicated the dynamic CORESET. An example method by a UE generally includes receiving at least one downlink control information (DCI), of a first physical downlink control channel (PDCCH), that schedules at least one dynamic CORESET; and receiving a second PDCCH in the dynamic CORESET, wherein the UE is to apply at least one QCL assumption associated with a PDSCH for the at least one dynamic CORESET if one or more conditions are met.

公开(公告)号：WO2021142692A1

公开(公告)日：2021-07-22

申请号：PCT/CN2020/072381

申请日：2020-01-16

Applicant: QUALCOMM INCORPORATED ,  MA, Liangping ,  WANG, Xiao Feng ,  XU, Huilin ,  ZHANG, Dan ,  SAKHNINI, Iyab Issam ,  CAO, Yiqing ,  MA, Jun ,  WU, Qiang

Inventor： MA, Liangping ,  WANG, Xiao Feng ,  XU, Huilin ,  ZHANG, Dan ,  SAKHNINI, Iyab Issam ,  CAO, Yiqing ,  MA, Jun ,  WU, Qiang

IPC: H04W72/12

Abstract: A method of wireless communication, the method including: receiving a synchronization signal block (SSB) from a first wireless communication device, wherein the SSB is received via a first beam of a plurality of beams from the first wireless communication device; based on the SSB, acquiring configuration information specific to the first beam for using an initial downlink bandwidth part and an initial uplink bandwidth part; and communicating between the first wireless communication device and a second wireless communication device on the first beam using the initial downlink bandwidth part and the initial uplink bandwidth part.

公开(公告)号：WO2018236960A1

公开(公告)日：2018-12-27

申请号：PCT/US2018/038438

申请日：2018-06-20

Applicant: QUALCOMM INCORPORATED

Inventor： WU, Qiang ,  BLACK, Peter John ,  LIU, Ruoheng

IPC: H04B7/185 ,  H04B7/19 ,  H04B7/195

Abstract: A method and apparatus for operating a satellite system including different satellites that may belong to different types of satellite constellations. In some implementations, the satellite system may include a LEO satellite constellation and one or more non-LEO satellite constellations that can be used to increase the forward link capacity of the LEO satellite constellation, for example, by allowing an LEO satellite to offload at least some of its forward link traffic to one of the non-LEO satellites. The user terminals can dynamically switch forward link communications between a LEO satellite and a non-LEO satellite while maintaining a return link connection with the LEO satellite.

公开(公告)号：WO2016153823A1

公开(公告)日：2016-09-29

申请号：PCT/US2016/022180

申请日：2016-03-11

Applicant: QUALCOMM INCORPORATED

Inventor： WU, Qiang ,  BLACK, Peter John

IPC: H04B7/185 ,  H04W56/00

CPC classification number: H04W56/0015 ,  H04B7/01 ,  H04B7/18502 ,  H04B7/18513 ,  H04W56/0035 ,  H04W56/0045

Abstract: Method and apparatus for time or frequency synchronization of radio signals transmitted by user terminals in communication with a gateway through a satellite is provided. The satellite may be part of a non-synchronous satellite communication system, such as a low-earth orbit (LEO) satellite communication system for data, voice or video communications. Times of transmission of return link radio signals from the user terminals may be adjusted such that the signals arrive at the satellite or at the gateway without large time delay differentials. Carrier frequencies of return link radio signals transmitted from the user terminals may be adjusted such that the signals arrive at the satellite or at the gateway without large frequency offset differentials.

Abstract translation: 提供了用于通过卫星与网关通信的用户终端发送的无线电信号的时间或频率同步的方法和装置。 卫星可以是非同步卫星通信系统的一部分，例如用于数据，语音或视频通信的低地球轨道（LEO）卫星通信系统。 可以调整来自用户终端的返回链路无线电信号的发送时间，使得信号到达卫星或网关而没有大的时间延迟差。 可以调整从用户终端发送的返回链路无线电信号的载波频率，使得信号到达卫星或网关而没有大的频率偏移差分。

公开(公告)号：WO2016153763A1

公开(公告)日：2016-09-29

申请号：PCT/US2016/021082

申请日：2016-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Dan ,  GURELLI, Mehmet Izzet ,  NAGARAJA, Sumeeth ,  VASSILOVSKI, Dan ,  DETERMAN, James Taylor ,  MARSH, Gene Wesley ,  WU, Qiang

IPC: H04B7/185

CPC classification number: H04W72/046 ,  H04B7/18543 ,  H04W72/0473

Abstract: A method and apparatus for a non-geosynchronous orbit (NGSO) satellite to comply with equivalent power flux density (EPFD) limits are disclosed. The example implementations may allow a constellation of NGSO satellites to comply with EPFD limits without disabling beams transmitted from the NGSO satellites. The power level of one or more beams to be transmitted from the NGSO satellites may be dynamically adjusted according to a beam power back-off schedule. In some aspects, the beam power back-off schedule may specify beam power back-off values as a function of latitude on Earth, and may allow for maximum allowable power levels for beams transmitted from the NGSO satellites without violating any of the EPFD percentile limits.

Abstract translation: 公开了一种用于非地球同步轨道（NGSO）卫星符合等效功率通量密度（EPFD）限值的方法和装置。 示例实现可以允许NGSO卫星的星座符合EPFD限制，而不禁止从NGSO卫星发射的波束。 从NGSO卫星发送的一个或多个波束的功率电平可以根据波束功率退避进度进行动态调整。 在一些方面，波束功率回退计划可以指定作为地球上纬度的函数的波束功率回退值，并且可以允许从NGSO卫星发射的波束的最大允许功率电平，而不违反任何EPFD百分位数限制 。

公开(公告)号：WO2011142743A1

公开(公告)日：2011-11-17

申请号：PCT/US2010/034329

申请日：2010-05-11

Applicant: QUALCOMM Incorporated ,  SUN, Jing ,  WU, Qiang ,  ATTAR, Rashid, Ahmed, Akbar ,  GURELLI, Mehmet, I.

Inventor： SUN, Jing ,  WU, Qiang ,  ATTAR, Rashid, Ahmed, Akbar ,  GURELLI, Mehmet, I.

IPC: H04L25/03 ,  H04B1/707

CPC classification number: H04L25/03006

Abstract: A method for interference cancellation in a device that receives transmissions from multiple sources is disclosed. The method includes receiving multiple slots, each including a pilot segment and a traffic segment. A first one of the slots includes information indicating an activity level of a traffic segment of the first one of the slots. The method also includes calculating a value associated with interference among the plurality of slots, utilizing the information indicating the activity level to account for an amount of interference attributable to the first one of the slots. Furthermore, channel conditions are estimated for a second one of the slots using the value associated with the amount of interference. The method also includes processing the second one of the slots according to the estimated channel conditions.

Abstract translation: 公开了一种在从多个源接收传输的设备中进行干扰消除的方法。 该方法包括接收多个时隙，每个时隙包括导频段和业务段。 时隙中的第一个包括指示第一个时隙的业务段的活动级别的信息。 该方法还包括使用指示活动级别的信息来计算归因于第一个时隙的干扰量，计算与多个时隙之间的干扰相关联的值。 此外，使用与干扰量相关联的值，针对第二个时隙估计信道条件。 该方法还包括根据估计的信道条件来处理第二个时隙。