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公开(公告)号：US10567986B2
公开(公告)日：2020-02-18
申请号：US15449346
申请日：2017-03-03
Applicant: QUALCOMM Incorporated
Inventor： Piyush Gupta , Junyi Li , Chong Li
Abstract: Aspects of the disclosure relate to back-off mechanisms for fair 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 initialized with a back-off value selected to provide fair access to the unlicensed sidelink channel by both active sidelink devices and other devices utilizing the unlicensed sidelink channel. In some examples, the back-off value may be selected based on an estimated number of active sidelink devices. The estimated number of active sidelink devices may be determined, for example, by monitoring distributed handshake signaling on the unlicensed sidelink channel.
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公开(公告)号：US10484972B2
公开(公告)日：2019-11-19
申请号：US15788740
申请日：2017-10-19
Applicant: QUALCOMM Incorporated
Inventor： Jamie Menjay Lin , Hao Xu , Chong Li , Chih-Ping Li , Jing Jiang , Tingfang Ji
Abstract: Various techniques provide for identifying and transmitting a first transmission to a UE in a first transmission time interval (TTI), and puncturing a portion of the first transmission with a higher priority second transmission that has a shorter TTI than the first TTI. The punctured portion of the first transmission may then be transmitted in a subsequent portion of the first TTI, concurrently with an originally allocated portion of the first transmission for that subsequent portion of the TTI. A UE may identify the punctured portion of the first transmission, and identify that the punctured portion of the first transmission is being transmitted in the subsequent portion of the first TTI. The UE may decode the received transmissions and merge the punctured portion with other, non-punctured, portions of the first transmission.
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公开(公告)号：US20190335480A1
公开(公告)日：2019-10-31
申请号：US16394916
申请日：2019-04-25
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Jing Jiang , Yang Yang , Chih Ping Li , Junyi Li , Chong Li , Farhad Meshkati
Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit, and a user equipment (UE) may receive a group physical control channel signaling, which may configure grant uplink transmissions for a set of UEs including the receiving UE. The group physical control channel signaling may indicate allotted resources for configured grant uplink transmissions. The group physical control channel signaling may further indicate a group physical control channel which a UE may monitor for control messages. The UE may transmit a configured grant uplink transmission in accordance with the group physical control channel signaling. The base station may receive the configured grant uplink transmission and may determine a control message which it may transmit in the group physical control channel based on the configured grant uplink transmission. The UE may receive the control message, and may determine whether to retransmit a configured grant uplink transmission based thereon.
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公开(公告)号：US10412201B2
公开(公告)日：2019-09-10
申请号：US14939721
申请日：2015-11-12
Applicant: QUALCOMM Incorporated
Inventor： Lei Zhang , Chong Li , Xinzhou Wu , Junyi Li
Abstract: Methods, systems, and devices for wireless communication are described. A base station may perform a clear channel assessment (CCA) procedure on a channel that includes multiple sub-bands of a radio frequency spectrum band. The base station may determine that the channel is available based on the CCA and transmit a special header in the channel. In some examples, the special header may include multiple transmission time intervals (TTIs), where each TTI may include a header packet in each sub-band of the radio frequency spectrum band. In some cases, the header packet may include a clear to send (CTS)-to-self frame structure. The base station may transmit a first TTI across each of the sub-bands at a first power level, and transmit additional TTIs across the sub-bands at a different power level. Additional header packets may be transmitted at the boundaries of subsequent subframes.
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公开(公告)号：US10383137B2
公开(公告)日：2019-08-13
申请号：US15411928
申请日：2017-01-20
Applicant: QUALCOMM Incorporated
Inventor： Piyush Gupta , Junyi Li , Chong Li , Peter Gaal
Abstract: Aspects of the present disclosure provide methods and apparatuses that can provide sidelink grant information to out-of-coverage (OoC) sidelink devices. When one or more sidelink devices are out of a coverage area of a base station, an in-coverage device receiving sidelink grant information from the base station can retransmit, relay, or rebroadcast sidelink grant information to the OoC sidelink devices to enable sidelink communication with the OoC device or facilitate sidelink communication between OoC devices.
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Patent Agency Ranking
公开(公告)号：US20190200374A1
公开(公告)日：2019-06-27
申请号：US16293400
申请日：2019-03-05
Applicant: QUALCOMM incorporated
CPC classification number: H04W72/1242 , H04W48/16 , H04W72/02 , H04W72/10 , H04W72/1278 , H04W72/1289 , H04W76/14 , H04W88/04
Abstract: Techniques are described herein 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 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 interference between the scheduled traffic and the priority traffic communicated without first scheduling the specific communication resources. To mitigate interference between different traffic types, a user equipment (UE) may transmit a device-to-device silencing message to other UEs. Upon receiving the silencing message, the other UEs may release any scheduled communication resources that at least partially overlap with the semi-persistent resources.
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公开(公告)号：US20190141694A1
公开(公告)日：2019-05-09
申请号：US16014799
申请日：2018-06-21
Applicant: QUALCOMM Incorporated
Inventor： Piyush Gupta , Junyi Li , Chong Li , Hua Wang
Abstract: Methods and apparatuses are provided which may be used in a base station and/or user equipment (UE) to support or otherwise provide device-to-device (D2D) communication in a shared radio frequency spectrum between candidate UEs. For example, a base station may determine that a first UE and a second UE are candidates for D2D communication, and provide and indicate that a Grant-free Uplink (GUL) resource allocation for D2D communication between the first and second UEs. The base station may further monitor the D2D communication.
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公开(公告)号：US10264595B2
公开(公告)日：2019-04-16
申请号：US15386653
申请日：2016-12-21
Applicant: QUALCOMM Incorporated
Abstract: Techniques are described herein 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 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 interference between the scheduled traffic and the priority traffic communicated without first scheduling the specific communication resources. To mitigate interference between different traffic types, a user equipment (UE) may transmit a device-to-device silencing message to other UEs. Upon receiving the silencing message, the other UEs may release any scheduled communication resources that at least partially overlap with the semi-persistent resources.
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公开(公告)号：US20190110293A1
公开(公告)日：2019-04-11
申请号：US16137152
申请日：2018-09-20
Applicant: QUALCOMM Incorporated
Inventor： Chong Li , Karl Georg Hampel , Junyi Li
Abstract: Aspects of the present disclosure describe a fallback silencing mechanism for wireless communications. A wireless device that operates primarily on unlicensed frequency bands, such as a factory automation device, may occasionally have a need to make Ultra-Reliable Low-Latency Communication (URLLC) transmissions. If the unlicensed band becomes unsuitable for URLLC transmissions, the wireless device may fallback to licensed band transmissions. A silencing signal may be sent on downlink resources to silence uplink Enhanced Mobile Broadband (eMBB) transmissions for one or more mini-slots. The wireless device may then send a URLLC transmission on the one or more min-slots.
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公开(公告)号：US20190098654A1
公开(公告)日：2019-03-28
申请号：US16137840
申请日：2018-09-21
Applicant: QUALCOMM Incorporated
Inventor： Chong Li , Wanshi Chen , Jing Jiang , Jing Sun
Abstract: Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) may communicate in a high reliability and low latency communications system (e.g., ultra-reliable low latency communications (URLLC)). The base station may signal a UE-specific scheduling request (SR) repetition configuration that the UE may utilize to transmit an instantaneous SR when a buffer status report (BSR) is triggered by a new data packet. The UE may repeatedly transmit the SR until a number of repetitions or a time period of repetitions is met or an uplink grant is received from the base station. The SR repetition configuration may include a number of parameters including a repetition setting, power settings, a resource allocation, and an acknowledgement/negative acknowledgment (ACK/NACK) procedure.
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