公开(公告)号：US20160269207A1

公开(公告)日：2016-09-15

申请号：US15065272

申请日：2016-03-09

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Tao Luo ,  Shimman Arvind Patel

IPC: H04L27/12 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04L27/122 ,  H04L5/0048 ,  H04L25/0224 ,  H04L27/2613 ,  H04L27/2636

Abstract: Techniques are described for wireless communication. A first method includes inserting channel or interference estimation modulation symbols into a sequence of data modulation symbols; performing a discrete Fourier transform (DFT) on a group of modulation symbols in the sequence of data modulation symbols, the group of modulation symbols including at least one of the channel or interference estimation modulation symbols; and generating a single-carrier frequency domain modulated (SC-FDM) symbol stream based at least in part on an output of the DFT. A second method includes performing an IDFT on a tone-demapped output of a DFT for each of at least one SC-FDM symbol stream, to recover a plurality of data modulation symbols and channel or interference estimation modulation symbols for each of the at least one SC-FDM symbol stream; estimating interference based at least in part on the channel or interference estimation modulation symbols; and decoding the data modulation symbols based at least in part on the estimated interference.

Abstract translation: 技术描述为无线通信。 第一种方法包括将信道或干扰估计调制符号插入到数据调制符号序列中; 对所述数据调制符号序列中的一组调制符号执行离散傅立叶变换（DFT），所述调制符号组包括所述信道或干扰估计调制符号中的至少一个; 以及至少部分地基于所述DFT的输出来生成单载波频域调制（SC-FDM）符号流。 第二种方法包括对于至少一个SC-FDM符号流中的每一个对DFT的色调去映射输出执行IDFT，以恢复多个数据调制符号和用于至少一个的每个的信道或干扰估计调制符号 SC-FDM符号流; 至少部分地基于信道或干扰估计调制符号来估计干扰; 以及至少部分地基于所估计的干扰来解码所述数据调制符号。

公开(公告)号：US20160242213A1

公开(公告)日：2016-08-18

申请号：US15044717

申请日：2016-02-16

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Xiaoxia Zhang ,  Shimman Arvind Patel ,  Wanshi Chen ,  Yongbin Wei

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04W16/14 ,  H04W74/0808

Abstract: Techniques are described for wireless communication. One method includes winning a contention for access to an unlicensed radio frequency spectrum band, transmitting a request message upon winning the contention for access to the unlicensed radio frequency spectrum band, and receiving a response message over the unlicensed radio frequency spectrum band. The request message is transmitted by a user equipment (UE) on an enhanced physical random access channel (ePRACH) or shortened ePRACH (SePRACH), to access a cell that operates in the unlicensed radio frequency spectrum band. The response message is received in response to transmitting the request message, and the request message may be transmitted irrespective of whether a base station has gained access to the unlicensed radio frequency spectrum band.

Abstract translation: 技术描述为无线通信。 一种方法包括：获得访问未经许可的射频频带的竞争，在赢得对未经许可的射频频带的访问的争用时发送请求消息，以及通过未许可的射频频带接收响应消息。 请求消息由用户设备（UE）在增强型物理随机接入信道（ePRACH）或缩短的ePRACH（SePRACH）上传输，以访问在非许可射频频带中操作的小区。 响应于发送请求消息而接收到响应消息，并且可以发送请求消息，而不管基站是否已经获得对未许可的射频频带的访问。

公开(公告)号：US20160234857A1

公开(公告)日：2016-08-11

申请号：US14993592

申请日：2016-01-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/12

CPC classification number: H04W72/1263 ,  H04L5/0044 ,  H04L5/0091 ,  H04W72/1231

Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 接收设备可以检测与低延迟传输相关联的信号，并相应地解码非低延迟通信。 接收设备可以从发送设备接收指示器，其指示何时和何时低延迟通信发生。 该指示可以指定由低延迟通信使用的频率资源或符号。 指示符可以在与低延迟通信相同的子帧期间，在子帧结束时，或者在随后的子帧期间发送。 接收设备可以使用该指示符来减轻低延迟干扰，生成信道估计，以及可靠地解码非低延迟通信。 在一些情况下，干扰低延迟通信可能发生在接收设备的服务小区内; 或者干扰低延迟通信可能发生在相邻小区中。

公开(公告)号：US20160036581A1

公开(公告)日：2016-02-04

申请号：US14807069

申请日：2015-07-23

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/14 ,  H04L27/20 ,  H04W72/04 ,  H04L27/26

CPC classification number: H04L5/14 ,  H04L27/20 ,  H04L27/2607 ,  H04W74/006 ,  H04W74/04

Abstract: The present disclosure, for example, relates to one or more techniques for indicating a frame format for transmissions using unlicensed radio frequency spectrum bands. A UE may receive, from a base station, a frame format indicator associated with a transmission opportunity for transmissions in an unlicensed radio frequency spectrum band. The UE may determine a time-division duplexing (TDD) configuration for the transmission opportunity based at least in part on the frame format indicator.

Abstract translation: 本公开例如涉及一种或多种用于指示使用未许可射频频带的传输的帧格式的技术。 UE可以从基站接收与未许可的射频频带中的传输的传输机会相关联的帧格式指示符。 UE可以至少部分地基于帧格式指示符来确定用于传输机会的时分双工（TDD）配置。

公开(公告)号：US20150271847A1

公开(公告)日：2015-09-24

申请号：US14584149

申请日：2014-12-29

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00

Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.

Abstract translation: 技术描述为无线通信。 第一种方法包括发送第一信号以指示接入射频频带中的第一信道，以及在无线电频谱带中用第一信号发送信息。 第二种方法包括获胜争用以接入射频频带，并且在获胜争用以访问射频频带之后，发送第一信号以将第二信号的起始点与与无线电频谱相关联的参考边界对准 带。 第三种方法包括获胜争用以在第一帧周期期间访问射频频带，第一帧从多个不同的帧周期中选出，并且在每个第一帧周期的一个或多个子帧期间以周期性的方式发射信号 的多个不同的帧周期。