公开(公告)号：US10440756B2

公开(公告)日：2019-10-08

申请号：US15837803

申请日：2017-12-11

Applicant: QUALCOMM Incorporated

Inventor： Lei Zhang ,  Chong Li ,  Xinzhou Wu ,  Junyi Li

IPC: H04W72/00 ,  H04W74/08 ,  H04W16/14 ,  H04W74/00 ,  H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices are described for techniques for downlink (DL) scheduling and uplink (UL) scheduling in a shared radio frequency (RF)spectrum band. In some aspects, a wireless communication device may receive an UL data transmission grant associated with a channel of shared RF spectrum band. The wireless communication device may perform a channel readiness procedure associated with the channel. The wireless communication device may also transmit channel readiness information based at least in part on the channel readiness procedure to a base station. The channel readiness information may be transmitted via an uplink channel of a licensed RF spectrum band different from the shared RF band. In other aspects, a base station may schedule a data transmission on one or more channels of a shared RF spectrum band. The base station may transmit a data transmission grant for the scheduled data transmission to a wireless communication device.

公开(公告)号：US20190261394A1

公开(公告)日：2019-08-22

申请号：US16278281

申请日：2019-02-18

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Rajat Prakash ,  Chong Li ,  Piyush Gupta

IPC: H04W72/12 ,  H04L1/08 ,  H04W72/04

Abstract: Methods, systems, and devices for dynamic monitoring and scheduling in retransmission are described for wireless communications. For example, a receiving device may receive a data transmission in a first receiver bandwidth, determine that a data packet of the data transmission was unsuccessfully decoded, switch to a second receiver bandwidth that is wider than the first receiver bandwidth or narrower than the first receiver bandwidth (e.g., based on determining that the data packet was unsuccessfully decoded), and receive a retransmission of the data packet in the second receiver bandwidth. In another example, a transmitting device may schedule a data transmission according to a first receiver bandwidth, receive an indication that a data packet of the data transmission was unsuccessfully decoded, and schedule a retransmission of the data packet according to a second receiver bandwidth that is wider than the first receiver bandwidth or narrower than the first receiver bandwidth.

公开(公告)号：US10390362B2

公开(公告)日：2019-08-20

申请号：US15368425

申请日：2016-12-02

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Chong Li ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Shailesh Patil ,  Jing Jiang ,  Wei Zeng ,  Alexei Gorokhov ,  Junyi Li

IPC: H04W72/14 ,  H04W72/12 ,  H04W74/04 ,  H04W76/14

Abstract: An apparatus may receive, from a scheduling entity, sidelink grant information in a downlink control channel. After receiving the grant information in the downlink control channel, the apparatus may transmit a request-to-send (RTS) signal comprising an indication of a requested duration of time to reserve a sidelink channel for sidelink data. If the sidelink channel is available for the requested duration of time, the apparatus may receive a clear-to-send (CTS) signal configured to indicate an availability of the sidelink channel for the requested duration of time. Subsequently, the apparatus may communicate, with another apparatus different from the scheduling entity, the sidelink data using the sidelink channel during the requested duration of time. Afterwards, the apparatus may communicate acknowledgment information corresponding to the communication of the sidelink signal with the other apparatus. Various additional and alternative aspects are described herein.

公开(公告)号：US20190223206A1

公开(公告)日：2019-07-18

申请号：US16242806

申请日：2019-01-08

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Junyi Li ,  Chong Li

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04W72/1289 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1893 ,  H04L1/1896 ,  H04L5/0055 ,  H04L2001/0093

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit semi-persistent scheduling (SPS) messages to a set of user equipments (UEs) using respective resources corresponding to each UE. The base station may receive, from each of a subset of UEs from the set of UEs, a negative acknowledgement (NACK) message associated with the SPS messages. The base station may transmit a group downlink control message including information associated with a downlink resource configuration for retransmission of the respective SPS messages to the subset of UEs. The base station may retransmit SPS messages to each of the subset of UEs using the downlink resource configuration.

公开(公告)号：US10349432B2

公开(公告)日：2019-07-09

申请号：US15388242

申请日：2016-12-22

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li

IPC: H04W52/02 ,  H04W72/10 ,  H04W72/12 ,  H04W76/38

Abstract: Methods, systems, and devices for wireless communication are described for SPS for low-latency communications. A wireless communication device may establish a block of semi-persistent scheduling (SPS) resources in each of a plurality of transmission time intervals (TTIs) for transmission of priority traffic, and determine that a level of priority traffic to transmit during a first TTI of the plurality of TTIs is below a priority traffic threshold. The wireless communication device may transmit a per-TTI release signal to indicate that the block of SPS resources in the first TTI is released from being reserved for priority traffic.

公开(公告)号：US20190124634A1

公开(公告)日：2019-04-25

申请号：US16224331

申请日：2018-12-18

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Piyush Gupta ,  Junyi Li

IPC: H04W72/04 ,  H04L5/14 ,  H04W88/04 ,  H04L1/18 ,  H04W76/14 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. In an FDD system, a UE may identify an indicator associated with ultra-reliable low latency communications (URLLC) while communicating in a sidelink channel. The UE may also identify dedicated uplink resources in the sidelink channel, and reserve the dedicated uplink resources. The dedicated uplink resources may be reserved for an acknowledgement/negative acknowledgement (ACK/NACK) feedback or for a scheduling request (SR). URLLC data may be communicated, and the reserved uplink resources may be utilized to transmit an ACK/NACK feedback or a SR. In a TDD system, a base station may transmit information identifying dedicated resources for URLLC data. In some cases, a base station may transmit an indicator channel, which a sidelink UE may monitor to determine the presence of URLLC data, and respond accordingly.

公开(公告)号：US20180249486A1

公开(公告)日：2018-08-30

申请号：US15886416

申请日：2018-02-01

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Chong Li ,  Jing Jiang ,  Alexandros Manolakos

IPC: H04W72/12 ,  H04W72/04 ,  H04W28/06

CPC classification number: H04W72/1257 ,  H04W28/06 ,  H04W28/26 ,  H04W72/0446 ,  H04W72/1242 ,  H04W72/1289 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/1242 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/22

Abstract: Methods, systems, and devices for wireless communication are described that provide for establishing periodic resources that may be used for low latency communications. An indication channel may be provided that may indicate that one or more higher latency transmissions may be punctured with low latency communications that are transmitted outside of the periodic resources. In some cases, the indication channel may be transmitted only in subsets of time resources, such as mini-slots of time resources within a slot, and a user equipment (UE) may monitor the indication channel to determine that a transmission is punctured. The UE may not monitor the indication channel in the periodic resources, and may thus conserve power compared to monitoring the indication channel in all time resources.

公开(公告)号：US20180184431A1

公开(公告)日：2018-06-28

申请号：US15388324

申请日：2016-12-22

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li

IPC: H04W72/04 ,  H04W72/10 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communication are described to provide priority traffic grant-less access to pre-defined communication resources that are semi-persistently scheduled. A set of semi-persistent communication resources may be reserved for use by priority traffic. If the semi-persistent resources are not used for priority traffic, the semi-persistent resources may be scheduled for use by other types of traffic. As priority traffic is identified, the priority traffic may be transmitted using the semi-persistent resource without having those communication resources granted by a scheduling entity. Such grant-less access to the semi-persistent resources may result in collisions between the scheduled traffic and the priority traffic. To mitigate interference between different traffic types, the scheduled traffic may be transmitted using a transmission power that ensures an interference parameter indicative of an amount of interference imposed by the scheduled traffic on the priority traffic satisfies an interference threshold.

公开(公告)号：US20180049196A1

公开(公告)日：2018-02-15

申请号：US15436648

申请日：2017-02-17

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Junyi Li ,  Chong Li

IPC: H04W72/04

CPC classification number: H04L5/0073 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053

Abstract: Aspects of the disclosure relate to a sidelink signaling mechanism that provides for a combination of single-tone and multiple-tone signaling to reduce overhead, while ensuring reliable signaling. In some examples, a sidelink request signal, such as a source transmit signal (STS), may be a single-tone signal, and a sidelink confirmation signal, such as a destination receive signal (DRS), may be a multiple-tone signal. In other examples, the request signal may be a multiple-tone signal, and the confirmation signal may be a single-tone signal.

公开(公告)号：US20180049143A1

公开(公告)日：2018-02-15

申请号：US15436668

申请日：2017-02-17

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Junyi Li ,  Chong Li

IPC: H04W56/00 ,  H04W16/14

CPC classification number: H04W56/0005 ,  H04W16/14 ,  H04W56/002 ,  H04W74/0808 ,  H04W74/0891 ,  H04W76/14

Abstract: Aspects of the disclosure relate to distributed joint access of an unlicensed sidelink channel Each sidelink device may perform independent and asynchronous listen before talk (LBT) of the unlicensed sidelink channel with a respective back-off timer value. The first sidelink device to complete back-off may transmit a joint access synchronization (JAS) signal indicating a duration of time that the unlicensed sidelink channel may be accessed by sidelink devices. Synchronized access sharing of the unlicensed sidelink channel across different active sidelinks may then be achieved through distributed handshake signaling.