公开(公告)号：US20190069336A1

公开(公告)日：2019-02-28

申请号：US16022522

申请日：2018-06-28

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli

IPC: H04W76/27 ,  H04L5/00 ,  H04W24/10 ,  H01Q5/307

CPC classification number: H04W76/27 ,  H01Q5/307 ,  H04B1/005 ,  H04B1/406 ,  H04L5/0007 ,  H04L5/0053 ,  H04W16/10 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support multi-band operation. Different frequency bands may experience different communication characteristics (e.g., frequency-dependent fading), which may result in undesirable interference patterns and/or coverage gaps. The described techniques provide for a network architecture that optimizes throughput while considering interference metrics. The network architecture may in some cases adapt to changes in the communication environment (e.g., dynamically or semi-statically), and the adaptation may be autonomous or may be performed in conjunction with a coordinating entity. Additionally, the described techniques provide for improved mobility procedures for devices within the network, which may improve throughput, reduce latency, or otherwise benefit the wireless communications system.

公开(公告)号：US20190069303A1

公开(公告)日：2019-02-28

申请号：US16107290

申请日：2018-08-21

Applicant: Qualcomm Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik

IPC: H04W72/08 ,  H04W72/04 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support multi-band operation. Different frequency bands may experience different communication characteristics (e.g., frequency-dependent fading), which may result in undesirable interference patterns and/or coverage gaps. The described techniques provide for channel access methods for multi-band operation. The channel access methods may allow for improved throughput for a wireless communications system. Additionally or alternatively, the described techniques may improve energy efficiency for communicating devices, reduce signaling overhead, or otherwise benefit a wireless communications system. Generally, the described techniques provide for efficient anchoring of high-band communications to low-band transmissions.

公开(公告)号：US10098083B2

公开(公告)日：2018-10-09

申请号：US14678620

申请日：2015-04-03

Applicant: QUALCOMM Incorporated

Inventor： Yanjun Sun ,  Rahul Malik ,  Peerapol Tinnakornsrisuphap

IPC: H04W4/00 ,  H04W56/00 ,  H04W72/12 ,  H04L1/00 ,  H04L1/18 ,  H04W84/12 ,  H04W88/06

Abstract: Methods, systems, and devices are described for dealing with mutual clock drifts for communications over multiple RATs by maintaining a guard interval. A guard interval is a time interval during which no transmissions should occur. For example, the guard interval may be set relative to a scheduled interference interval of a STA so that transmissions to the STA from an AP will not collide with different RAT (e.g., interference) transmissions/receptions even with clock drift (e.g., a guard interval at both sides of the scheduled interference interval). Such an approach may allow the clocks to be re-synchronized (e.g., by the STA notifying the AP of the schedule of interference interval) infrequently to avoid excessive signaling overhead, which would increase with an increase in the number of coexistence STAs being serviced by the AP.

公开(公告)号：US20180288747A1

公开(公告)日：2018-10-04

申请号：US15898987

申请日：2018-02-19

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Sony Akkarakaran ,  Rahul Malik ,  Tamer Kadous ,  Akula Reddy

IPC: H04W72/04 ,  H04B7/185 ,  H04B1/713 ,  H04L27/26 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify control information to be transmitted, in a slot, to a user equipment (UE). The base station may determine a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE. The first component control resource set may be frequency diverse and time diverse from the second component control resource set. The base station may transmit the configuration to the UE.

公开(公告)号：US20180287840A1

公开(公告)日：2018-10-04

申请号：US15936311

申请日：2018-03-26

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Jing Sun ,  Rahul Malik ,  Tamer Kadous ,  Akula Reddy

IPC: H04L27/26 ,  H04L5/00

Abstract: Aspects of the disclosure relate to synchronization signaling supporting multiple waveforms. A synchronization signal block (SSB) is configurable for transmission using either at least a first waveform or a second waveform, where the first waveform has higher peak to average power ratio (PAPR) characteristics such as OFDM and the second waveform has lower PAPR characteristics, such as DFT-S-OFDM. The SSB is transmitted selectively using either the first waveform or the second waveform for transmission of the SSB. Furthermore, the characteristics of the transmission such as a predetermined pattern of the first and second waveform transmissions may be utilized to communicate to a receiver the type of waveform being used. In this manner, SSB transmissions may take advantage of respective advantages afforded by each type of waveform, particularly when using higher frequency transmissions above 40 GHz in wireless communication systems.

公开(公告)号：US20180198556A1

公开(公告)日：2018-07-12

申请号：US15913739

申请日：2018-03-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04L1/00 ,  H04W74/08 ,  H04L1/18 ,  H04W16/14 ,  H04W88/06 ,  H04W72/12

CPC classification number: H04L1/0009 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

公开(公告)号：US20180063809A1

公开(公告)日：2018-03-01

申请号：US15354955

申请日：2016-11-17

Applicant: QUALCOMM Incorporated

Inventor： Santosh Vamaraju ,  Xiaoxin Zhang ,  Rahul Malik

IPC: H04W64/00 ,  H04W4/02 ,  H04W24/10 ,  H04L12/26

CPC classification number: H04W64/003 ,  H04L43/0864 ,  H04W4/023 ,  H04W24/10 ,  H04W64/00

Abstract: Techniques for estimating a position of an observing station are disclosed based on capturing, at the observing station, a first and a second FTM message exchanged between a first messaging station and a second messaging station. At the observing station, a first time of arrival of the first FTM message and a second time of arrival of the second FTM message may be determined. Based on contents of one or more FTM messages, a first transmission-related time associated with the first FTM message and a second transmission-related time associated with the second FTM message may be obtained. The position of the observing station may be estimated based on (1) a position of the first messaging station, (2) a position of the second messaging station, (3) the first time of arrival, (4) the second time of arrival, (5) the first transmission-related time, and (6) the second transmission-related time.

公开(公告)号：US20170099648A1

公开(公告)日：2017-04-06

申请号：US15251987

申请日：2016-08-30

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Carlos Horacio Aldana ,  Hemanth Sampath

IPC: H04W64/00 ,  H04L29/12

CPC classification number: H04W64/00 ,  H04L61/6004 ,  H04L61/6022 ,  H04W84/12

Abstract: Methods, apparatuses, and systems are described that implement techniques and protocols to enable a first device to send positioning information to a second device. For example, an apparatus device may include a processor configured to generate, at a first device, a data frame including an address field and a data field. The address field includes a particular value indicating that the data field includes positioning information related to a location of the first device. The apparatus also includes a transmitter configured to transmit the data frame to a second device.

公开(公告)号：US20160255643A1

公开(公告)日：2016-09-01

申请号：US15051491

申请日：2016-02-23

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Hemanth Sampath

IPC: H04W72/12

CPC classification number: H04W72/1215 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/10

Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of decoding additional information about long-term evolution unlicensed (LTE-U) communications for enhancing wireless communication performance can include receiving, from a LTE-U device, a first wireless local area network (WLAN) packet reserving a communication medium over a time period. The first WLAN communication includes information about a LTE-U communication. The method further includes decoding, at a wireless device, information about the LTE-U communication.

Abstract translation: 本公开的某些方面涉及无线通信的方法和装置。 在一个方面，解码用于增强无线通信性能的长期演进未许可（LTE-U）通信的附加信息的方法可以包括从LTE-U设备接收保留第一无线局域网 通讯媒体。 第一WLAN通信包括关于LTE-U通信的信息。 该方法还包括在无线设备处解码关于LTE-U通信的信息。

公开(公告)号：US20160234835A1

公开(公告)日：2016-08-11

申请号：US15019767

申请日：2016-02-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04W72/04 ,  H04L1/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04L1/0009 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

Abstract translation: 技术描述为无线通信。 第一种方法包括感测占用共享射频频带的第一无线电接入技术（RAT）通信的指示; 以及响应于所述感测，配置设备使用的第二RAT的至少一个参数来竞争接入所述频带。 第二种方法包括从在下限和上限之间延伸的数字范围中随机选择一个数字; 竞争通过在多个CCA时隙上执行扩展清除信道评估（ECCA）过程来访问共享射频频带，所述多个CCA时隙包括等于上限的第一数量的CCA时隙; 并且在执行ECCA过程之后确定该频带可用于与随机选择的数字相等的第二数量的CCA时隙可用于获得对该频带的访问的争用。