公开(公告)号：US10103868B2

公开(公告)日：2018-10-16

申请号：US15436047

申请日：2017-02-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Hao Xu ,  Xiao feng Wang

IPC: H04L7/00 ,  H04L1/00 ,  H04W4/00 ,  H04W4/70 ,  H04J11/00 ,  H04L27/26 ,  H04L5/00 ,  H04J13/00 ,  H04L5/14

Abstract: In order to reduce ambiguity in NB-SSS and complexity of receiver processing, a transmitter apparatus generates an SSS, wherein the SSS signal comprises a sequence of OFDM symbols, wherein each symbol of the sequence of SSS symbols is mapped to a codeword symbol of an FEC code. Source symbols of the sequence of SSS symbols carry a PCID and frame timing information, and parity symbols of the sequence of SSS symbols introduce redundancy and coding gain. A receiver receives the NB-SSS over multiple OFDM symbols, each symbol of the SSS comprising a short ZC sequence with a combination of root index and cyclic shift. The apparatus derives path metrics using cross-correlation for each of the plurality of symbols, determines a candidate SSS source message based on the derived path metrics and coding constraints of FEC codewords, and identifies a PCID and timing information based on the candidate SSS source message.

公开(公告)号：US20180278384A1

公开(公告)日：2018-09-27

申请号：US15933068

申请日：2018-03-22

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Joseph Binamira Soriaga ,  Hao Xu ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: Various aspects described herein relate to techniques for multi-cluster uplink transmissions in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method comprises receiving, by a user equipment (UE), information of one or more sounding reference signal (SRS) patterns, generating, by the UE, one or more rate matching parameters based on the information, and transmitting, by the UE, an uplink signal based on the generated one or more rate matching parameters.

公开(公告)号：US20180242319A1

公开(公告)日：2018-08-23

申请号：US15897999

申请日：2018-02-15

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Wanshi Chen ,  Tao Luo ,  Hao Xu ,  Peter Gaal

IPC: H04W72/04 ,  H04W8/24

CPC classification number: H04W72/0446 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/0053 ,  H04W8/24 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/042 ,  H04W72/048 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described for improved scheduling and/or scheduling configuration. A base station may receive, from a user equipment (UE), an indication of one or more UE capabilities. The base station may determine, based on the one or more UE capabilities, when a grant to be transmitted is usable by the UE. The base station may transmit the grant to the UE, the grant including an assignment of resources based on when the grant is usable. In some examples, a UE may identify one or more UE capabilities in association with different grant characteristics and transmit, to a base station, an indication of the one or more UE capabilities. The UE may receive, from the base station, a grant having one of the different grant characteristics and including an assignment of resources, the assignment of resources based on the one or more UE capabilities.

公开(公告)号：US20180167965A1

公开(公告)日：2018-06-14

申请号：US15839790

申请日：2017-12-12

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Wei Zeng

IPC: H04W72/12 ,  H04W72/04

Abstract: Aspects of the disclosure relate to communication systems, apparatus and methods which enable or support flexible symbol configurations for uplink channels. In one example a method includes performing transmitting first uplink information from a subordinate entity to a scheduling entity in a long burst portion of one or more slots, and transmitting second uplink information from the subordinate entity to the scheduling entity in a combination of long burst and short burst portions of the one or more slots. Each of the one or more slots includes a portion that carries a physical downlink control channel. The second uplink information is transmitted in a physical uplink control channel

公开(公告)号：US20180145839A1

公开(公告)日：2018-05-24

申请号：US15696000

申请日：2017-09-05

Applicant: QUALCOMM Incorporated

Inventor： Kuo-Chun Lee ,  Sivaramakrishna Veerepalli ,  Liangchi Hsu ,  Chun-Hao Hsu ,  Suli Zhao ,  Ralph Akram Gholmieh ,  Nagaraju Naik ,  Carlos Pazos ,  Masato Kitazoe ,  Mungal Singh Dhanda ,  Hao Xu ,  Feilu Liu

IPC: H04L12/18 ,  H04W72/00 ,  H04W72/14

CPC classification number: H04L12/189 ,  H04W4/06 ,  H04W4/08 ,  H04W68/02 ,  H04W72/005 ,  H04W72/14 ,  H04W76/40

Abstract: Methods, systems, and devices for wireless communication are described. Data for a broadcast or multicast service may be sent over a control channel. A network device may broadcast a message to indicate a plurality of enhanced multimedia broadcast multicast service (eMBMS) services offered by the network. The mobile device may transmit an indication to the network device identifying an eMBMS service of interest. The network device may transmit a configuration message before broadcasting or multicasting data of the eMBMS service of interest. The configuration message may notify the mobile device of a control channel on which to receive the data related to the eMBMS service. The network device may then broadcast or multicast the eMBMS service data on the control channel. The data may be segmented at a particular protocol layer and mapped to several transmission time intervals within each repetition of the control channel.

公开(公告)号：US20180139735A1

公开(公告)日：2018-05-17

申请号：US15812994

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Seyong Park

IPC: H04W72/04 ,  H04L5/14 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04B7/212 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/0446

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20180132282A1

公开(公告)日：2018-05-10

申请号：US15648313

申请日：2017-07-12

Applicant: QUALCOMM Incorporated

Inventor： Hung LY ,  Hao Xu ,  Wanshi Chen ,  Tingfang Ji ,  Renqiu Wang ,  Peter Gaal ,  Amir Aminzadeh Gohari

IPC: H04W74/08 ,  H04W72/14 ,  H04L5/00

CPC classification number: H04W74/0833 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0091 ,  H04L27/0006 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: A configurable new radio (NR) RACH procedure that may be executed by a UE and a base station is disclosed. A first message can be transmitted, in an inactive or idle state, a on a physical random access channel, where the first message includes a random access preamble. A second message can be received on a downlink channel in response to the first message, where the second message includes a temporary cell radio network temporary identifier and an uplink grant for the user equipment. A request can be transmitted on an uplink channel based on the uplink grant. A common search space of a downlink control channel can be monitored, such as for an acknowledgement message or a negative acknowledgement message corresponding to the request and identifiable based on the temporary cell radio network temporary identifier.

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：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：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.