公开(公告)号：US09220115B2

公开(公告)日：2015-12-22

申请号：US14332633

申请日：2014-07-16

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Tao Luo ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Hao Xu

IPC: H04L12/413 ,  H04W74/08

CPC classification number: H04W74/0816 ,  H04W74/08

Abstract: Techniques are described for channel access in a radio frequency spectrum band shared by a number of asynchronous operators. One or more clear channel assessment (CCA) procedures may be used to contend for one or more transmission periods in the radio frequency spectrum band. When the contention is won for one or more transmission periods, a determination may be made as to whether the a number of transmission periods for which contention has been won is equal to or greater than a threshold number of consecutive transmission periods. If the number of transmission periods for which contention has been won is at or above the threshold number, occupancy of the radio frequency spectrum band may be relinquished for a period of time, in order to allow another operator to access the radio frequency spectrum band.

Abstract translation: 描述了由许多异步运算符共享的射频频带中的信道接入技术。 可以使用一个或多个清除信道评估（CCA）过程来争夺无线电频谱带中的一个或多个传输周期。 当在一个或多个发送周期中获胜时，可以确定竞争已经赢得的发送周期的数量是否等于或大于连续发送周期的阈值数。 如果争用争用的发送期间的数量等于或高于阈值数，则可以在一段时间内放弃无线电频谱带的占用，以允许另一操作者访问无线电频谱带。

公开(公告)号：US20150319781A1

公开(公告)日：2015-11-05

申请号：US14685051

申请日：2015-04-13

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Kiran Kumar Somasundaram ,  Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Hao Xu

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04J3/16

CPC classification number: H04W16/14 ,  H04J3/1694 ,  H04W72/044 ,  H04W74/08

Abstract: Techniques are described for wireless communication. One method includes identifying, by a first transmitter, a first contention access protocol timing for accessing an unlicensed radio frequency spectrum band, and aligning a second contention access protocol timing with the first contention access protocol timing, the second contention access protocol timing being used by the first transmitter for accessing the unlicensed radio frequency spectrum band.

Abstract translation: 技术描述为无线通信。 一种方法包括由第一发射机识别用于访问未许可射频频带的第一争用接入协议定时，以及将第二争用接入协议定时与第一争用接入协议定时对准，第二争用接入协议定时由第 用于访问未经许可的射频频带的第一发射机。

公开(公告)号：US20150245327A1

公开(公告)日：2015-08-27

申请号：US14573075

申请日：2014-12-17

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Wanshi Chen ,  Naga Bhushan ,  Peter Gaal ,  Kiran Kumar Somasundaram ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi ,  Hao Xu ,  Tingfang Ji

IPC: H04W72/04 ,  H04W24/08 ,  H04W16/14

CPC classification number: H04W72/042 ,  H04W16/14 ,  H04W24/08 ,  H04W72/1215

Abstract: Techniques are described for wireless communication. One method includes monitoring, by a first base station of a first operator, for uplink configuration information and downlink configuration information associated with a second base station of at least one second operator; identifying a transmission timing of one or more uplink transmissions to the second base station of the at least one second operator based at least in part on the uplink configuration information; and prohibiting access to an unlicensed radio frequency spectrum band by the first base station of the first operator during the identified transmission timing of the one or more uplink transmissions. Transmissions of the second base station of the at least one second operator in the unlicensed radio frequency spectrum band may be asynchronous to transmissions of the first base station of the first operator in the unlicensed radio frequency spectrum band.

Abstract translation: 技术描述为无线通信。 一种方法包括由第一运营商的第一基站监视与至少一个第二运营商的第二基站相关联的上行链路配置信息和下行链路配置信息; 至少部分地基于所述上行链路配置信息来识别对所述至少一个第二运营商的所述第二基站的一个或多个上行链路传输的传输定时; 以及在所述一个或多个上行链路传输的所识别的传输定时期间禁止由所述第一运营商的所述第一基站访问未许可的射频频带。 非许可射频频带中的至少一个第二运营商的第二基站的传输可以与非许可射频频带中的第一运营商的第一基站的传输异步。

公开(公告)号：US11057139B2

公开(公告)日：2021-07-06

申请号：US16660130

申请日：2019-10-22

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Vikas Jain ,  Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram

IPC: H04W4/00 ,  H04J11/00 ,  H04W74/08 ,  H04W74/00 ,  H04W16/14 ,  H04W72/12 ,  H04B7/26

Abstract: Mitigation of inter-base station resynchronization loss in wireless networks including contention-based shared frequency spectrum is discussed. Aspects of such mitigation provide for base stations entering into an idle mode when a transmission opportunity occurs in a radio frame of the next resynchronization occasion. Additional aspects provide for the base station to signal a flexible listen before talk (LBT) frame length to the user equipment (UE), either with or without explicit signaling of the downlink-uplink division. Further aspects provide for the base station to signal a reset indication to UEs that will prompt the UEs to monitor for downlink channel reserving signals prior to the current LBT frame ending by the resynchronization occasion.

公开(公告)号：US10548130B2

公开(公告)日：2020-01-28

申请号：US15199214

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Vikas Jain ,  Kiran Kumar Somasundaram ,  Aleksandar Damnjanovic ,  Fang Chen

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04L29/12 ,  H04W8/08 ,  H04W28/02 ,  H04W72/14 ,  H04W84/12 ,  H04W88/02

Abstract: Techniques are described for wireless communication. One method includes identifying a priority parameter associated with data to be transmitted on an uplink carrier; selecting, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and transmitting the selected type of message.

公开(公告)号：US10498494B2

公开(公告)日：2019-12-03

申请号：US16104111

申请日：2018-08-16

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Alberto Rico Alvarino

IPC: H04L1/16 ,  H04L12/26 ,  H04L1/00 ,  H04L1/12

Abstract: According to the present disclosure, CSI and/or a plurality of ACKs related to a group of DL data transmissions may be buffered at the UE as a GACK until a DCI trigger is received from the eNB. Once the trigger is received, the UE may transmit the CSI and/or GACK to the eNB. In this way HARQ feedback and/or CSI may be reliably communicated while reducing payload. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus send, to a UE, data transmissions associated with a first plurality of downlink subframes. In an aspect, the apparatus increments a counter for each data transmission sent to the UE. In a further aspect, the apparatus transmits, to the UE, a first trigger for a first GACK when a counter is greater than or equal to a threshold.

公开(公告)号：US10476615B2

公开(公告)日：2019-11-12

申请号：US14695998

申请日：2015-04-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Ravi Teja Sukhavasi ,  Makesh Pravin John Wilson ,  Kiran Kumar Somasundaram ,  Onkar Dabeer ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04B17/309 ,  H04W16/14 ,  H04W72/00 ,  H04W74/08 ,  H04W72/12

Abstract: The present disclosure, for example, relates to one or more techniques for scaling the bandwidth of a carrier. Available sub-channels of an unlicensed radio frequency spectrum band may be determined, and the available sub-channels may be included in the carrier. The available sub-channels may be adjacent or non-adjacent sub-channels. The bandwidth of the carrier may be determined according to which sub-channels are included in the carrier. In this way, the bandwidth of the carrier may be scaled according to the available sub-channels in the unlicensed radio frequency spectrum band.

公开(公告)号：US20190274157A1

公开(公告)日：2019-09-05

申请号：US16415851

申请日：2019-05-17

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Tao Luo ,  Onkar Jayant Dabeer ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Anastasios Stamoulis ,  Hao Xu ,  Xiaoxia Zhang

IPC: H04W72/12 ,  H04W52/54 ,  H04L5/00 ,  H04W74/08 ,  H04B7/08 ,  H04L29/08

Abstract: Techniques are described for wireless communication. A first method may include inserting, in a first transmission using a first radio access technology (RAT), a channel occupancy identifier for a second transmission using a second RAT. The first method may also include transmitting the first transmission having the channel occupancy identifier over an unlicensed radio frequency spectrum band. A second method may include receiving, at a receiver operated using a first RAT, a channel occupancy identifier for a transmission using a second RAT. The channel occupancy identifier may be received over an unlicensed radio frequency spectrum band. The second method may also include decoding the channel occupancy identifier to identify a backoff period, and refraining from accessing the unlicensed radio frequency spectrum band using the first RAT based at least in part on the identified backoff period.

公开(公告)号：US10009053B2

公开(公告)日：2018-06-26

申请号：US14497218

申请日：2014-09-25

Applicant: QUALCOMM Incorporated

Inventor： Kiran Kumar Somasundaram ,  David Gutierrez-Estevez ,  Aleksandar Damnjanovic ,  Tao Luo ,  Siddhartha Mallik ,  Hao Xu

IPC: H04L25/03 ,  H04B1/10 ,  H04J11/00 ,  H04B1/7097 ,  H04W24/08 ,  H04W72/08

CPC classification number: H04B1/1027 ,  H04B1/7097 ,  H04J11/0023 ,  H04L25/03821 ,  H04W24/08 ,  H04W72/082

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In one aspect, a user equipment (UE) receives a signal at the UE. The received signal includes a transmission from a serving cell and at least a first interfering transmission. The UE determines a constrained transmission rate associated with the first interfering transmission and cancels the first interfering transmission from the received signal based on the constrained transmission rate. In another aspect, a wireless communication apparatus determines a constrained transmission rate for a transmission on one or more reduced-rate resources. The wireless communication apparatus signaling the constrained transmission rate to a user equipment (UE).

公开(公告)号：US09942801B2

公开(公告)日：2018-04-10

申请号：US14968339

申请日：2015-12-14

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram

IPC: H04W28/26 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W72/12

CPC classification number: H04W28/26 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/1215 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A first method includes contending for access to a first channel of a radio frequency spectrum, and transmitting, upon winning contention for access to the first channel, a first channel reservation indication. The contending may be performed by a first node operating according to a first radio access technology. The first channel reservation indication may be understood by a second node operating according to a second radio access technology.