公开(公告)号：US20180091980A1

公开(公告)日：2018-03-29

申请号：US15642384

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Xiaoxia Zhang ,  Sanaz Barghi ,  Juan Montojo

IPC: H04W16/14 ,  H04W74/08

CPC classification number: H04W16/14 ,  H04W74/0808 ,  H04W74/0816

Abstract: Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence. A device or system may monitor a shared spectrum channel for the signature waveform, and when detected, may determine whether the shared spectrum is available for that system, or busy as occupied by another system. When the shared spectrum channel is idle, the device or system may reserve the channel by transmitting the signature waveform. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US09929835B2

公开(公告)日：2018-03-27

申请号：US15172682

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Siddhartha Mallik ,  Taesang Yoo ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W56/00 ,  H04W72/12 ,  H04W74/08 ,  H04L5/00

CPC classification number: H04L5/0007 ,  H04W56/001 ,  H04W72/1215 ,  H04W74/08 ,  H04W74/0816

Abstract: Techniques are described for wireless communication. One method includes identifying a plurality of counters used to contend for access to a plurality of channels of an unlicensed radio frequency spectrum band. Each of the plurality of counters is associated with a respective channel of the plurality of channels of the unlicensed radio frequency spectrum band. The method also includes measuring at least one channel of the plurality of channels of the unlicensed radio frequency spectrum band. The measuring is associated with a contention for access to the at least one channel of the unlicensed radio frequency spectrum band. The method also includes synchronizing or desynchronizing at least a subset of the plurality of counters based at least in part on the measuring.

公开(公告)号：US20180069750A1

公开(公告)日：2018-03-08

申请号：US15458004

申请日：2017-03-13

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Juan Montojo

IPC: H04L12/24 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04L41/08 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/006 ,  H04L5/0085 ,  H04L41/0836 ,  H04W52/0206 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0473 ,  H04W72/085 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21

Abstract: Efficient cell-specific reference signal (CRS) and control channel configurations may be established dynamically based on channel conditions for one or more user equipment (UE) that may be served by a transmission. A base station may configure a CRS for a transmission time interval (TTI) based at least in part on a channel quality of one or more UEs that are to receive transmissions during the TTI. A number of downlink symbols at the beginning of the TTI may be used for CRS transmissions, and UEs with better channel quality may receive CRS transmissions and other control information in a first symbol, while UEs with a poorer channel quality may receive higher power CRS transmissions in the first symbol and the other control information is transmitted in a subsequent symbol.

公开(公告)号：US20180062801A1

公开(公告)日：2018-03-01

申请号：US15464731

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Taesang Yoo ,  Jing Sun ,  Juan Montojo ,  Siddhartha Mallik

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0035 ,  H04J11/0053 ,  H04L5/0048 ,  H04L27/2605 ,  H04L27/2607 ,  H04L27/2646 ,  H04W72/042

Abstract: Various aspects described herein relate to techniques for communications in a coordinated multi-point (CoMP) wireless communications system. In an aspect, a method of wireless communications may include transmitting, by a user equipment (UE), reference signal (RS) measurements for forming a CoMP cluster, receiving, at the UE from at least a base station in the CoMP cluster, a message including information of at least a first cyclic prefix (CP) length for a first uplink transmission, wherein at least the first CP length for the first uplink transmission is different from a second CP length used for a second uplink transmission, and transmitting, by the UE, the first uplink transmission using at least the first CP length. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.

公开(公告)号：US20180054812A1

公开(公告)日：2018-02-22

申请号：US15659580

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W72/04 ,  H04L5/00

Abstract: Various aspects of the disclosure relate to controlling allocations for independent links. For example, a device may dynamically control the uplink/downlink allocations for different links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). At least one device may signal the uplink/downlink allocation for the different links. If the isolation between links is high, the links may use different time division duplexed (TDD) or frequency division duplexed (FDD) subframe structures. If the isolation is low or for certain types of information (e.g., control information), the direction of transmission for one link may be constrained to be the same as the direction of transmission for another link (e.g., the links may use the same TDD/FDD frame structures). Also, sounding on different links may be time division multiplexed.

公开(公告)号：US20170303192A1

公开(公告)日：2017-10-19

申请号：US15425944

申请日：2017-02-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Juan Montojo

IPC: H04W52/02 ,  H04W72/04

CPC classification number: H04W52/0206 ,  H04W52/0216 ,  H04W72/042 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21

Abstract: A control channel transmission may include information for downlink transmissions, and another control channel, such as a physical micro sleep indicator channel (PMSICH), may include information for uplink transmissions that a user equipment (UE) may use to enter a power-saving micro sleep state. A base station may drop PMSICH transmissions in the event that downlink resources are constrained. A UE that receives a PMSICH transmission may determine an uplink transmission duration, and enter a micro sleep state for all or a portion of the uplink transmission duration.

公开(公告)号：US09794004B2

公开(公告)日：2017-10-17

申请号：US14476476

申请日：2014-09-03

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Tao Luo ,  Yongbin Wei

IPC: H04B15/00 ,  H04L5/00 ,  H04W24/02 ,  H04W72/12

CPC classification number: H04B15/00 ,  H04L5/003 ,  H04W24/02 ,  H04W72/1226 ,  H05K999/99

Abstract: Suppression of serving cell transmissions directed to second-served UEs may improve channel estimation of a serving cell or a neighbor cell. This may include using scheduling information for second-served UEs to suppress serving cell signals intended for second-served UEs having overlapping MIMO transmissions. Alternatively, this scheduling information may aid in suppressing a serving cell signal for a second-served UE to improve channel estimation of a neighbor cell. Various embodiments described herein, include implementations and techniques to aid channel estimation, and signal scheduling information to a first-served UE to aid in suppression of serving cell signals for second-served UEs.

公开(公告)号：US20170041767A1

公开(公告)日：2017-02-09

申请号：US15190374

申请日：2016-06-23

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Jun Wang ,  Siddhartha Mallik ,  Taesang Yoo ,  Abhijit Khobare ,  Ajay Gupta ,  Vikas Jain ,  Yongbin Wei

IPC: H04W4/06 ,  H04W76/04 ,  H04W72/04

CPC classification number: H04W4/06 ,  H04L1/1841 ,  H04L1/1874 ,  H04L47/34 ,  H04W28/0205 ,  H04W72/04 ,  H04W76/27 ,  H04W80/02

Abstract: A device may support communication without a radio link control (RLC) layer, which may include receiving a packet data convergence protocol (PDCP) service data units (SDUs) for multiple radio bearers at a PDCP layer. The multiple radio bearers may have different reliability or delay targets, and a reordering procedure at the PDCP layer may be conducted on the different radio bearers. The reordering procedure may be a same reordering procedure for each of the radio bearers, with one or more parameters that may be adjusted based on one or both of the reliability target or delay target of the radio bearer.

Abstract translation: 设备可以支持通信，而无需无线链路控制（RLC）层，其可以包括在PDCP层处接收用于多个无线电承载的分组数据会聚协议（PDCP）服务数据单元（SDU）。 多个无线电承载可以具有不同的可靠性或延迟目标，并且可以在不同的无线电承载上对PDCP层进行重新排序过程。 重新排序过程可以是对于每个无线电承载的相同的重新排序过程，具有可以基于无线电承载的可靠性目标或延迟目标中的一个或两个来调整的一个或多个参数。

公开(公告)号：US20170013470A1

公开(公告)日：2017-01-12

申请号：US15177928

申请日：2016-06-09

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Taesang Yoo ,  Xiaoxia Zhang ,  Siddhartha Mallik

IPC: H04W16/14 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04W16/14 ,  H04W72/1226 ,  H04W72/1278 ,  H04W74/0816 ,  H04W84/12

Abstract: Techniques are described for wireless communication. One method of wireless communication includes receiving, at a first user equipment (UE), a first communication over a shared radio frequency spectrum band from a first base station. The first communication includes a pre-grant communication associated with a downlink transmission or a grant of uplink resources associated with an uplink transmission. The method further includes determining, based at least in part on receiving the first communication, whether a channel reservation signal is detected over the shared radio frequency spectrum band; and transmitting a second communication over the shared radio frequency spectrum band, to the first base station, based at least in part on the determining. The second communication includes an approval of the downlink transmission or the uplink transmission.

Abstract translation: 技术描述为无线通信。 一种无线通信方法包括：在第一用户设备（UE）处，从第一基站通过共享射频频带接收第一通信。 第一通信包括与下行链路传输相关联的预授权通信或与上行链路传输相关联的上行链路资源的准许。 该方法还包括至少部分地基于接收第一通信来确定在共享射频频带上是否检测到信道预约信号; 以及至少部分地基于所述确定，通过所述共享无线电频谱频带向所述第一基站发送第二通信。 第二通信包括下行链路传输或上行链路传输的批准。

公开(公告)号：US20160344526A1

公开(公告)日：2016-11-24

申请号：US15153419

申请日：2016-05-12

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Taesang Yoo ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04W72/14 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0051 ,  H04L5/0091 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/14

Abstract: A network may use enhanced sounding reference signal (SRS) transmission techniques to support reference signal transmissions over shared spectrum. For example, a wireless device may receive an uplink grant and an indicator. The uplink grant may include an uplink resource allocation to the wireless device and the indicator may alert the device of a forthcoming reference signal transmission. The wireless device may use the uplink grant and the indicator to determine a reference signal transmission period relative to the resources assigned in the uplink grant. For example, the wireless device may determine that the reference signal transmission period is prior to, during, or subsequent to the uplink transmission period. In some cases, a wireless device may be aperiodically or periodically scheduled for reference signal transmissions.

Abstract translation: 网络可以使用增强的探测参考信号（SRS）传输技术来支持共享频谱上的参考信号传输。 例如，无线设备可以接收上行链路许可和指示符。 上行链路许可可以包括向无线设备的上行链路资源分配，并且指示符可以向设备通知即将到来的参考信号传输。 无线设备可以使用上行链路许可和指示符来确定相对于在上行链路许可中分配的资源的参考信号传输周期。 例如，无线设备可以确定参考信号传输周期在上行链路传输周期之前，期间或之后。 在一些情况下，无线设备可以非周期性地或周期性地调度用于参考信号传输。