公开(公告)号：US20150222408A1

公开(公告)日：2015-08-06

申请号：US14612779

申请日：2015-02-03

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Shimman Arvind Patel

IPC: H04L5/00 ,  H04L1/16 ,  H04W72/00

CPC classification number: H04L5/0055 ,  H04B7/0413 ,  H04L1/1671 ,  H04L5/001 ,  H04L5/0048 ,  H04L27/0006 ,  H04L47/41 ,  H04W28/02 ,  H04W48/00 ,  H04W72/00

Abstract: An enhanced acknowledgement indicator channel is discussed that multiplexes acknowledgement signals for multiple uplink signals from various user equipments (UEs) into the enhanced acknowledgement indicator channel. The channel is divided into a number of paired data and pilot resource element groups that can be precoded independently of one another, such that each paired resource element group is precoded using a different or independent precoding than the other paired resource element groups. If the base station determines a failure to decode any uplink signals, instead of sending acknowledgement signals over the indicator channel, the base station may, instead, generate uplink grants for retransmission of the uplink signals.

Abstract translation: 讨论了一种增强的确认指示信道，其将来自各种用户设备（UE）的多个上行链路信号的确认信号复用到增强的确认指示符信道中。 该信道被划分为可以彼此独立地预编码的多个配对数据和导频资源元素组，使得使用与其他配对资源元素组不同或独立的预编码来对每个配对资源元素组进行预编码。 如果基站确定解码任何上行链路信号的故障，而不是通过指示符信道发送确认信号，则基站可以替代地生成用于上行链路信号的重传的上行链路许可。

公开(公告)号：US20150103777A1

公开(公告)日：2015-04-16

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: H04W76/02 ,  H04W16/14 ,  H04L29/06

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.

Abstract translation: 描述了用于无线通信的方法，设备，系统和设备。 在一种方法中，可以监视至少第一载波用于共享频谱中第二载波的清晰信道评估（CCA）的指示，并且可以基于该指示使用第二载波进行通信。 在另一种方法中，可以对共享频谱的第二载波第二载波执行CCA，并且可以在第一载波上发送用于第二载波的CCA的指示。

公开(公告)号：US20150098412A1

公开(公告)日：2015-04-09

申请号：US14490503

申请日：2014-09-18

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04L5/001 ,  H04L5/0033 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0064 ,  H04L5/0094 ,  H04W16/14 ,  H04W72/1226

Abstract: Methods, systems, apparatuses, and devices are described for wireless communication. From a plurality of physical carriers associated with a clear channel assessment (CCA) performed by a device, one of the physical carriers for which the CCA was successful may be identified. A virtual carrier associated with a wireless data transmission by the device may be mapped to the identified one of the physical carriers.

Abstract translation: 描述了用于无线通信的方法，系统，设备和设备。 从由设备执行的清除信道评估（CCA）相关联的多个物理载波中，可以识别CCA成功的物理载波之一。 与设备的无线数据传输相关联的虚拟载波可以被映射到所识别的一个物理载波。

公开(公告)号：US20150049715A1

公开(公告)日：2015-02-19

申请号：US14460996

申请日：2014-08-15

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Naga Bhushan

IPC: H04L5/00 ,  H04W16/14

CPC classification number: H04L5/0044 ,  H04L5/001 ,  H04L5/1469 ,  H04L27/0006 ,  H04W16/14

Abstract: Methods, systems, and devices are described for clear channel assessments (CCAs) on multiple component carriers transmitted using an unlicensed spectrum. A set of component carriers may be identified for transmission of communications signals on the unlicensed spectrum, and a CCA one component carrier of the set may be staggered to occur at a different time than a CCA for a different component carrier of the setoff component carriers. The staggering of CCAs may allow for CCA to be performed at different times for different component carriers, thus increasing opportunities to gain channel access in the unlicensed spectrum.

Abstract translation: 描述了使用非许可频谱传输的多分量载波上的清晰信道评估（CCA）的方法，系统和设备。 可以识别一组分量载波用于在未许可频谱上的通信信号的传输，并且该集合的CCA单分量载波可以在与截止分量载波的不同分量载波的CCA不同的时间上交错发生。 CCA的交错可能允许在不同时间对不同的分量载波执行CCA，从而增加在非许可频谱中获得信道接入的机会。

公开(公告)号：US20150043523A1

公开(公告)日：2015-02-12

申请号：US14454400

申请日：2014-08-07

Applicant: QUALCOMM Incorporated

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

IPC: H04W16/14 ,  H04W72/04

CPC classification number: H04W16/14 ,  H04B1/713 ,  H04L5/001 ,  H04L5/0012 ,  H04L5/0041 ,  H04L27/0006 ,  H04W36/22

Abstract: Methods, systems, and apparatuses are described for wireless communications, in which transmission of common information to two or more receivers over unlicensed spectrum may be provided. The common information may be transmitted over a number (e.g., a set) of different carrier frequencies of the unlicensed spectrum. A staggering pattern may be employed to transmit all or a part of the common information across each of the carrier frequencies in the set of carrier frequencies. The detection of the information on one of the carrier frequencies may provide information that may be used to derive the staggering pattern. The duration of the common information transmission on each of the carrier frequencies may be selected such that a clear channel assessment (CCA) to determine availability of the unlicensed spectrum is not required.

Abstract translation: 描述了用于无线通信的方法，系统和装置，其中可以提供通过未许可频谱向两个或更多个接收机传送公共信息。 公共信息可以通过非许可频谱的不同载波频率的数量（例如，一组）来发送。 可以采用交错模式来在载波频率集合中的每个载波频率上发送全部或一部分公共信息。 对载波频率之一上的信息的检测可以提供可用于导出交错模式的信息。 可以选择每个载波频率上的公共信息传输的持续时间，使得不需要用于确定未许可频谱的可用性的清晰信道评估（CCA）。

公开(公告)号：US20150023315A1

公开(公告)日：2015-01-22

申请号：US14317090

申请日：2014-06-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04W74/002 ,  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.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 在一种方法中，可以在基站处执行清除信道评估（CCA）以确定未许可频谱的可用性。 当可用时，第一波形可以通过非许可频谱发送到一组用户设备（UE）。 第一波形可以指示第一时间段和第二时间段，在该时间段期间，基站具有通过无许可频谱的信道访问。 可以响应于第一波形从一个或多个UE接收第二波形。 每个第二波形可以在第一时间周期期间通过非许可频谱接收，并且可以指示相应的UE在第二时间段期间通过未授权频谱具有信道接入以从基站接收数据。