公开(公告)号：US09844057B2

公开(公告)日：2017-12-12

申请号：US14518744

申请日：2014-10-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/12 ,  H04L27/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W72/0453 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/1226 ,  H04W74/0808

Abstract: Design of channel usage beacon signals (CUBS) in cooperative networks is disclosed. After detecting a clear channel assessment (CCA), a transmitter selects a configuration of a CUBS associated with the transmitter based on the CCA opportunity assigned to the network. The configuration of the CUBS associated with the transmitter may include a set of frequency subcarriers for CUBS transmissions. The transmitter transmits the CUBS according to transmission characteristics based on the CCA opportunity. In additional aspects, randomization may be introduced into the frequency subcarrier allocations of CUBS configurations where the transmitter receives assignment of virtual frequency subcarriers for CUBS transmissions and maps the virtual subcarrier to physical frequency subcarriers for CUBS transmission. Additional aspects allow for pattern offset values to be determined independently from the transmitter cell identifier. In such aspects, the assigned pattern offsets may be cell identifier-independent, while others may be cell identifier-dependent.

公开(公告)号：US20170339683A1

公开(公告)日：2017-11-23

申请号：US15659451

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Tao Luo ,  Srinivas Yerramalli ,  Tingfang Ji ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Naga Bhushan ,  Durga Prasad Malladi ,  Ravi Teja Sukhavasi

IPC: H04W72/04 ,  H04L5/00 ,  H04W16/14 ,  H04W74/02 ,  H04W52/02 ,  H04L29/06 ,  H04W76/02

Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, a control format indicator value for a frame may be received over a physical carrier in a shared spectrum. Based on the control format indicator value, a number of subframes of the frame to be used by a base station for downlink transmissions over the physical carrier may be determined. The control format indicator value may indicate an end of transmission, if data is to be transmitted during the frame, a number of subframes to be used for transmission, or whether the current subframe is the final subframe used for transmission. In some cases, a user equipment (UE) may use the control format indicator value to determine a sleep schedule. Further, ACK/NACK transmissions by a UE may be scheduled based on the control format indicator value.

公开(公告)号：US20170257854A1

公开(公告)日：2017-09-07

申请号：US15598090

申请日：2017-05-17

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Naga Bhushan ,  Peter Gaal

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

Abstract: Methods, systems, and devices are described for wireless communications. In one method, a clear channel assessment (CCA) may be performed at a base station to determine availability of an unlicensed spectrum. A first waveform may be transmitted to a set of user equipments (UEs) over the unlicensed spectrum when available. The first waveform may indicate a first time period and a second time period during which the base station has channel access over the unlicensed spectrum. A second waveform may be received from one or more UEs responsive to the first waveform. Each second waveform may be received over the unlicensed spectrum during the first time period and may indicate that the respective UE has channel access over the unlicensed spectrum to receive data from the base station during the second time period.

公开(公告)号：US09736829B2

公开(公告)日：2017-08-15

申请号：US14494929

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W52/02 ,  H04L29/06 ,  H04W16/14 ,  H04W76/02 ,  H04W74/02

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0091 ,  H04L65/601 ,  H04L69/14 ,  H04W16/14 ,  H04W52/0209 ,  H04W74/02 ,  H04W76/15 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/26

Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, at least a first carrier may be monitored for an indication of a clear channel assessment (CCA) for a second carrier in a shared spectrum, and communication may take place using the second carrier based on the indication. In another method, a CCA may be performed for a second carrier second carrier of a shared spectrum, and an indication of the CCA for the second carrier may be transmitted on a first carrier.

公开(公告)号：US20170202022A1

公开(公告)日：2017-07-13

申请号：US15404171

申请日：2017-01-11

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Tao Luo ,  Chirag Patel ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/04

CPC classification number: H04W74/0816 ,  H04W72/0446 ,  H04W72/14 ,  H04W74/006 ,  H04W74/0808

Abstract: Techniques for performing listen before talk (LBT) channel contention procedures in a shared radio frequency spectrum band are provided. The LBT techniques may include a shortened LBT procedure that may be selected if a base station has reserved a shared channel for a duration of expected user equipment (UE) uplink transmissions, and a full LBT procedure that may be selected if the base station has not reserved the channel for the duration of expected UE uplink transmissions. The shortened LBT procedure may include detecting energy levels of the channel for a relatively short time period relative to the full LBT procedure. The shortened LBT procedure may be selected if a time period between a UE receiving a grant of uplink resources and the beginning of the uplink resources is less than a threshold time value.

公开(公告)号：US20170079010A1

公开(公告)日：2017-03-16

申请号：US15244662

申请日：2016-08-23

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Srinivas Yerramalli ,  Tao Luo

IPC: H04W72/00 ,  H04W4/06 ,  H04W74/08 ,  H04W74/00 ,  H04W16/14 ,  H04L5/00

Abstract: Techniques are described for wireless communications. One method includes determining a contention window size for a first broadcast transmission or a first multicast transmission on at least one channel of a shared radio frequency spectrum band, where the first broadcast transmission or the first multicast transmission is targeted for a first plurality of UEs, and contending for access to the at least one channel of the shared radio frequency spectrum band for the first broadcast transmission or the first multicast transmission based at least in part on the determined contention window size. In some cases, the first broadcast transmission or the first multicast transmission may be an example of a multipoint transmission, which may include a coordinated multipoint transmission.

Abstract translation: 技术描述为无线通信。 一种方法包括在共享射频频带的至少一个信道上确定用于第一广播传输或第一多播传输的竞争窗口大小，其中第一广播传输或第一多播传输针对第一多个UE， 并且至少部分地基于所确定的竞争窗口大小来争取访问用于第一广播传输或第一组播传输的共享射频频带的至少一个信道。 在一些情况下，第一广播传输或第一多播传输可以是多点传输的示例，其可以包括协调的多点传输。

公开(公告)号：US20170048824A1

公开(公告)日：2017-02-16

申请号：US15234917

申请日：2016-08-11

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Madhavan Srinivasan Vajapeyam ,  Peter Gaal ,  Amir Aminzadeh Gohari ,  Valentin Alexandru Gheorghiu

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/04

CPC classification number: H04W72/04 ,  H04L5/0007 ,  H04W24/10 ,  H04W76/20 ,  H04W88/06 ,  H04W88/08

Abstract: Techniques are described for wireless communication. One method includes performing a plurality of radio resource management (RRM) measurements for a number of active downlink carriers in a shared radio frequency spectrum band; associating each of the RRM measurements with a measurement time indication; and transmitting data corresponding to the RRM measurements and the measurement time indications to a base station. Another method includes receiving an indication of co-located downlink carriers in a shared radio frequency spectrum band; performing a plurality of RRM measurements for the downlink carriers; combining the RRM measurements over a time interval in the shared radio frequency spectrum band based at least in part on the received indication; and transmitting a report based at least in part on the combined RRM measurements to a base station.

Abstract translation: 技术描述为无线通信。 一种方法包括对共享射频频带中的多个活动下行链路载波执行多个无线电资源管理（RRM）测量; 将每个RRM测量与测量时间指示相关联; 以及将对应于RRM测量和测量时间指示的数据发送到基站。 另一种方法包括在共享射频频带中接收同位置下行链路载波的指示; 对下行链路载波执行多个RRM测量; 至少部分地基于接收到的指示，在共享射频频带中的时间间隔上组合RRM测量; 以及至少部分地基于组合的RRM测量发送到基站的报告。

公开(公告)号：US20160183302A1

公开(公告)日：2016-06-23

申请号：US14971082

申请日：2015-12-16

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Srinivas Yerramalli ,  Tao Luo ,  Peter Gaal ,  Hao Xu

IPC: H04W74/08 ,  H04W16/14 ,  H04W24/08

CPC classification number: H04W74/0808 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0091 ,  H04L27/0006 ,  H04W16/14 ,  H04W24/08

Abstract: Techniques are described for wireless communication. A first method includes monitoring, by a first wireless device, at least one predetermined symbol period of a subframe for an indication that a second wireless device has obtained access to a shared radio frequency spectrum; determining a starting symbol for a transmission by the second wireless device over the shared radio frequency spectrum based on detecting the indication; and receiving the transmission by the second wireless device over the shared radio frequency spectrum based on the determined starting symbol.

Abstract translation: 技术描述为无线通信。 第一种方法包括由第一无线设备监视子帧的至少一个预定符号周期，用于第二无线设备获得对共享射频频谱的访问的指示; 基于检测到所述指示，确定由所述第二无线设备通过所述共享射频频谱发送的起始符号; 以及基于所确定的起始符号，通过共享射频频谱接收第二无线设备的传输。

公开(公告)号：US20160100407A1

公开(公告)日：2016-04-07

申请号：US14870543

申请日：2015-09-30

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Hao Xu ,  Wanshi Chen ,  Shimman Arvind Patel ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L5/00

Abstract: Techniques are described for wireless communication. A first method includes receiving from a base station an indication of a set of one or more uplink interlaces of an unlicensed radio frequency spectrum band allocated for a sounding reference signal, and transmitting the sounding reference signal for a user equipment (UE) over the indicated set of one or more uplink interlaces of the unlicensed radio frequency spectrum band. A second method includes receiving an indication of an interlace of an unlicensed radio frequency spectrum band allocated for a physical uplink control channel (PUCCH) transmission, and transmitting a scheduling request and a buffer status report over the indicated interlace.

Abstract translation: 技术描述为无线通信。 第一种方法包括：从基站接收分配给探测参考信号的未许可射频频带的一个或多个上行链路交织集合的指示，以及通过所指示的用户设备（UE）发送所述探测参考信号 未经许可的射频频带的一个或多个上行链路交织的集合。 第二种方法包括：接收针对物理上行链路控制信道（PUCCH）传输分配的未许可射频频带的交错的指示，以及通过所指示的交错发送调度请求和缓冲状态报告。

公开(公告)号：US20160057770A1

公开(公告)日：2016-02-25

申请号：US14791835

申请日：2015-07-06

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 ,  H04W76/02 ,  H04L29/08 ,  H04B7/08

CPC classification number: H04W72/1278 ,  H04B7/0811 ,  H04L5/0007 ,  H04L67/146 ,  H04W16/14 ,  H04W52/54 ,  H04W74/08 ,  H04W76/11

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.

Abstract translation: 技术描述为无线通信。 第一种方法可以包括在使用第一无线接入技术（RAT）的第一传输中使用第二RAT插入用于第二传输的信道占用标识符。 第一种方法还可以包括在非许可射频频带上发送具有信道占用标识符的第一传输。 第二种方法可以包括在使用第一RAT操作的接收机处接收使用第二RAT的传输的信道占用标识符。 信道占用标识符可以通过未许可的射频频带接收。 第二种方法还可以包括解码信道占用标识符以识别退避周期，以及至少部分地基于所识别的退避周期，使用第一RAT避免访问未许可射频频带。