公开(公告)号：US20180124711A1

公开(公告)日：2018-05-03

申请号：US15793782

申请日：2017-10-25

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04W52/14 ,  H04W72/12 ,  H04W72/04

CPC classification number: H04W52/146 ,  H04L5/0007 ,  H04L5/0094 ,  H04W52/346 ,  H04W52/42 ,  H04W72/0413 ,  H04W72/1215 ,  H04W72/1284 ,  H04W72/1289

Abstract: Symbol alignment and power scaling are provided for different length transmission time intervals (TTIs) within predefined boundaries, such as boundaries of a slot of a subframe. Described techniques provide for identifying time and/or frequency resources for one or more TTIs and allocating such resources based on a location within a subframe, pilot signals that may be transmitted using the resources, other processing timelines, or any combination thereof. In some cases, a power allocation for symbols within a TTI may be determined based on the allocated resources for the TTI. Frequency hopping patterns and power scaling for three-symbol TTIs are also provided.

公开(公告)号：US20180116000A1

公开(公告)日：2018-04-26

申请号：US15793223

申请日：2017-10-25

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Hao Xu ,  Wanshi Chen

IPC: H04W74/08 ,  H04W74/00

CPC classification number: H04W74/0833 ,  H04B7/2628 ,  H04L1/0003 ,  H04L1/0023 ,  H04W74/006 ,  H04W74/008

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes receiving an indication of at least one receive capability of a network access device; transmitting a first message of a random access channel (RACH) procedure; receiving a random access response (RAR) message in response to transmitting the first message; and interpreting the RAR message according to a format based at least in part on the received indication. A method for wireless communication at a network access device includes transmitting an indication of at least one receive capability of the network access device; receiving, from a UE, a first message of a RACH procedure; and transmitting a RAR message to the UE in response to receiving the first message. The RAR message has a format based at least in part on the at least one receive capability of the network access device.

公开(公告)号：US09955442B2

公开(公告)日：2018-04-24

申请号：US13836711

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Wanshi Chen ,  Tao Luo

IPC: H04W56/00 ,  H04J11/00

CPC classification number: H04W56/00 ,  H04J11/0069

Abstract: Certain aspects of the present disclosure relate to synchronization channel design for a new carrier type. In certain aspects, a User Equipment (UE) may first search for legacy locations of PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal), and attach to a cell that transmits the legacy PSS/SSS. Then the UE may be provided with information indicating a search space for PSS and SSS of a new carrier. The UE may then search for the PSS and SSS for the new carrier based on the received information. The relative spacings in time between the PSS and SSS for the first carrier may be different from the relative spacings in time between the PSS and SSS for the second carrier. In alternative aspects, the UE may receive a frequency offset value and determine PSS/SSS locations for the new carrier based on the frequency offset value and spaced center frequencies.

公开(公告)号：US20180110042A1

公开(公告)日：2018-04-19

申请号：US15692137

申请日：2017-08-31

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04W72/04 ,  H04L5/00 ,  H04W36/36

CPC classification number: H04W72/0413 ,  H04L1/0027 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/0094 ,  H04W36/36 ,  H04W52/325 ,  H04W52/346 ,  H04W52/367 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be scheduled for overlapping or concurrent uplink control information (UCI) transmissions on a non-low latency channel (e.g., physical uplink control channel (PUCCH)) and a low latency channel (shortened PUCCH (sPUCCH)). The UE may transmit on PUCCH or on sPUCCH, or both, according to the UE's configuration or capability. The UE may transmit low latency UCI on PUCCH and refrain from transmitting on sPUCCH, or the UE may transmit on sPUCCH and refrain from transmitting on PUCCH. In other examples, the UE may transmit on PUCCH and sPUCCH concurrently. The UE may split power between the PUCCH and sPUCCH so that the combined power of the two transmissions remains within a transmission power budget. In other examples, the UE may switch between concurrent transmissions and transmitting on one channel while refraining from transmitting on another channel.

公开(公告)号：US09948486B2

公开(公告)日：2018-04-17

申请号：US15293920

申请日：2016-10-14

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng Wang ,  Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Seyed Ali Akbar Fakoorian ,  Jing Lei ,  Renqiu Wang

IPC: H04L25/49 ,  H04L27/18 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L27/18 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/005 ,  H04L27/2614 ,  H04L27/265

Abstract: The apparatus enables pilot signals, whether single tone or multiple tone, that achieve a very low PAPR. After receiving an allocation for multiple tones, the apparatus determines a pilot signal for transmission. The apparatus may select tones from the allocation for transmission of a pilot signal based on a pilot pattern. The pilot pattern may comprise a tone sequence that identifies a sequences of tones, wherein each tone in the tone sequence of identifies one tone of multiple tones for transmission of a pilot signal during a given pilot symbol period. The pilot signal may also comprise a signal sequence. The apparatus may generate a set of multi-tone modulated pilot sequences, select a pilot sequence based on a cross-correlation property, and transmit a pilot signal using multiple tones of the allocation using the selected pilot sequence.

公开(公告)号：US09948431B2

公开(公告)日：2018-04-17

申请号：US14964249

申请日：2015-12-09

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal

IPC: H04L1/18 ,  H04W84/04

CPC classification number: H04L1/1835 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1896 ,  H04W84/042

Abstract: Various aspects described herein relate to managing a soft buffer for decoding hybrid automatic repeat/request (HARQ) based transmissions in wireless communications. A legacy soft buffer size of a legacy soft buffer can be determined for decoding HARQ based transmissions in legacy communications, where the legacy communications are based on a first transmission time interval (TTI) of a first duration. Ultra low latency (ULL) communications can be received, where the ULL communications are based on a second TTI that is less than the first duration. A ULL soft buffer size for a ULL soft buffer for decoding HARQ based transmissions in the ULL communications can be determined. Contents of the ULL soft buffer can be managed based at least in part on the ULL soft buffer size.

公开(公告)号：US20180098359A1

公开(公告)日：2018-04-05

申请号：US15694065

申请日：2017-09-01

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Tao Luo

IPC: H04W74/08 ,  H04B7/0456 ,  H04B7/06 ,  H04W72/04

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes transmitting precoder selection signals from at least two antennas of the UE during performance of a random access procedure over a wireless network; and receiving, from the wireless network during the random access procedure, an indication of a refined precoding setting for the UE. A method for wireless communication at a network access device includes receiving, from a UE during a random access procedure performed by the UE, precoder selection signals from at least two antennas of the UE; identifying a refined precoding setting for the UE based at least in part on the received precoder selection signals; and transmitting an indication of the refined precoding setting to the UE.

公开(公告)号：US20180098306A1

公开(公告)日：2018-04-05

申请号：US15833619

申请日：2017-12-06

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Tao Luo ,  Tingfang Ji ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Gavin Bernard Horn

IPC: H04W72/00 ,  H04W52/02 ,  H04W48/12 ,  H04W48/14

CPC classification number: H04W72/005 ,  H04W48/12 ,  H04W48/14 ,  H04W52/0206 ,  Y02B70/32 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: The described aspects include methods and apparatus for activating a transmitter to communicate in a wireless network. A small cell can determine to activate the transmitter to serve user equipment (UE) in a wireless network. The small cell can then broadcast a portion of a set of broadcast signals in a radio frame and broadcast a remaining portion of the set of broadcast signals along with the portion of the set of broadcast signals in a subsequent radio frame. By refraining from immediately broadcasting all broadcast signals, the small cell can mitigate interference to other small cells. In addition, a UE can determine whether to generate random access channel (RACH) sequences for proximity determination or uplink timing synchronization based on parameters received in a RACH order. Moreover, a small cell with an active transmitter can decode discovery signals from a device to facilitate handover determination.

公开(公告)号：US20180092125A1

公开(公告)日：2018-03-29

申请号：US15462669

申请日：2017-03-17

Applicant: QUALCOMM Incorporated

Inventor： Haitong Sun ,  Jay Kumar Sundararajan ,  Joseph Binamira Soriaga ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Tingfang Ji ,  Wei Zeng

IPC: H04W74/02

CPC classification number: H04W74/02 ,  H04W72/0413 ,  H04W72/1294 ,  H04W74/004

Abstract: Wireless communications systems and methods related to performing hybrid grant-free and grant-based uplink (UL) data transmission. A wireless communication device dynamically selects between a grant-free mode and a grant-based mode based on at least a transmission configuration. The wireless communication device sends a first data packet in the grant-free mode, based on the selecting, using a first UL resource. The wireless communication device sends a second data packet in the grant-based mode, based on the selecting, using a second UL resource allocated to the wireless communication device. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US09924498B2

公开(公告)日：2018-03-20

申请号：US13794757

申请日：2013-03-11

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Stefan Geirhofer ,  Peter Gaal ,  Tao Luo ,  Hao Xu

IPC: H04W72/04 ,  H04W48/20 ,  H04L1/00 ,  H04L1/18 ,  H04W48/10 ,  H04L27/26

CPC classification number: H04W72/0406 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/1861 ,  H04L27/2613 ,  H04W48/10 ,  H04W48/20

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a cell identifier is selected based on one or more properties associated with received downlink control information (DCI), where the properties may not be exclusively associated with determining a cell identifier. The cell identifier may be selected from a plurality of cell identifiers received through radio resource control signaling. The properties of the DCI may include a type of download control channel, a type of subframe and a type of DCI format used to provide the DCI.