公开(公告)号：US11201780B2

公开(公告)日：2021-12-14

申请号：US15256375

申请日：2016-09-02

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ting Yu ,  Gavin Bernard Horn ,  Anurag Vardhan ,  Rotem Cooper ,  Aziz Gholmieh ,  Keiichi Kubota

IPC: H04L12/24 ,  H04W76/27 ,  H04L1/00 ,  H04L12/805 ,  H04W28/06 ,  H04L1/18

Abstract: Some aspects provide for establishing a radio connection for the wireless communication, determining a configuration for whether to segment one or more packets for the wireless communication using the established radio connection, and communicating the one or more packets based on the determined configuration. Some aspects provide for assembling a first frame comprising one or more packets, transmitting the first frame, determining whether a portion of one or more packets was truncated during the assembling of the first frame, and transmitting a second frame comprising at least the truncated portion of the one or more packets of the first frame. Some aspects provide for receiving a first frame comprising one or more packets, determining that a portion of one or more packets is truncated, and determining whether to ignore as padding at least the truncated portion of the one or more packets of the first frame.

公开(公告)号：US11197344B2

公开(公告)日：2021-12-07

申请号：US16638110

申请日：2018-08-09

Applicant: Qualcomm Incorporated

Inventor： Ruiming Zheng ,  Yu-Ting Yu ,  Keiichi Kubota ,  Gavin Bernard Horn

IPC: H04W4/00 ,  H04W80/02 ,  H04L1/16 ,  H04W28/06

Abstract: Methods, systems, and devices for wireless communication are described. In some wireless communications systems, a transmitting device may identify a Radio Link Control (RLC) service data unit (SDU) to be transmitted to a receiving device. In some cases, the transmitting device may not have access to sufficient resources to transmit the entire RLC SDU. As such, the transmitting device may segment the RLC SDU into RLC SDU segments, and the transmitting device may transmit the RLC SDU segments to the receiving device. If an RLC layer at the receiving device receives one or more RLC SDU segments out of sequence, the RLC layer may initiate a reassembly (or reordering) timer. The RLC layer may reassemble the successfully received RLC SDU segments to be passed to upper layers. Once the timer expires, the RLC layer may declare that the missing RLC SDU segments are lost.

公开(公告)号：US10972947B2

公开(公告)日：2021-04-06

申请号：US16373205

申请日：2019-04-02

Applicant: QUALCOMM Incorporated

Inventor： Arun Prasanth Balasubramanian ,  Masato Kitazoe ,  Yu-Ting Yu ,  Keiichi Kubota

IPC: H04W36/00 ,  H04W80/08 ,  H04W36/04 ,  H04W12/00 ,  H04W76/27 ,  H04W72/04 ,  H04W8/08 ,  H04W12/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message that indicates a change from an evolved universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) packet data convergence protocol (PDCP) to a New Radio (NR) PDCP, wherein the message includes an instruction to perform an intra-cell handover; generate one or more security keys based at least in part on receiving the message that includes the instruction to perform the intra-cell handover; and communicate using the one or more security keys after the intra-cell handover is performed. Numerous other aspects are provided.

公开(公告)号：US10798775B2

公开(公告)日：2020-10-06

申请号：US16057265

申请日：2018-08-07

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ting Yu ,  Keiichi Kubota

IPC: H04W76/32 ,  H04W76/25 ,  H04W76/15 ,  H04W76/28 ,  H04W28/06

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may determine a deactivation of a duplication bearer for a packet data convergence protocol (PDCP) connection, wherein a first link and a second link are configured for the duplication bearer. The device may schedule data communication for the first link and not for the second link based at least in part on the deactivation of the duplication bearer. Numerous other aspects are provided.

公开(公告)号：US20200245400A1

公开(公告)日：2020-07-30

申请号：US16638110

申请日：2018-08-09

Applicant: Qualcomm Incorporated

Inventor： Ruiming Zheng ,  Yu-Ting Yu ,  Keiichi Kubota ,  Gavin Bernard Horn

IPC: H04W80/02 ,  H04L1/16 ,  H04W28/06

Abstract: Methods, systems, and devices for wireless communication are described. In some wireless communications systems, a transmitting device may identify a Radio Link Control (RLC) service data unit (SDU) to be transmitted to a receiving device. In some cases, the transmitting device may not have access to sufficient resources to transmit the entire RLC SDU. As such, the transmitting device may segment the RLC SDU into RLC SDU segments, and the transmitting device may transmit the RLC SDU segments to the receiving device. If an RLC layer at the receiving device receives one or more RLC SDU segments out of sequence, the RLC layer may initiate a reassembly (or reordering) timer. The RLC layer may reassemble the successfully received RLC SDU segments to be passed to upper layers. Once the timer expires, the RLC layer may declare that the missing RLC SDU segments are lost.

公开(公告)号：US20190387561A1

公开(公告)日：2019-12-19

申请号：US16440220

申请日：2019-06-13

Applicant: QUALCOMM Incorporated

Inventor： Karthika Paladugu ,  Yu-Ting Yu ,  Gavin Bernard Horn ,  Keiichi Kubota

IPC: H04W76/15 ,  H04W24/10 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A wireless communications system may support multi-connectivity for a user equipment (UE) with multiple distributed units (DUs) under one central unit (CU), the DUs and the CU belonging to a base station. The UE may establish radio resource control (RRC) connections with multiple cell groups corresponding to multiple DUs under the CU. The UE may transmit measurement reports that provide measurement information for cells in proximity to the UE. The UE may maintain a set of active cell groups and a set of inactive cell groups. In some cases, one or more cell groups may be identified as controlling cell groups used to transmit control information. In some examples, the UE may replicate an uplink packets and transmit the uplink packet and replicates on multiple cell groups. In some cases, the UE may aggregate an uplink transmission among multiple cell groups.

公开(公告)号：US10320693B2

公开(公告)日：2019-06-11

申请号：US15621321

申请日：2017-06-13

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ting Yu ,  Gavin Bernard Horn ,  Shailesh Maheshwari ,  Vanitha Kumar ,  Gang Andy Xiao

IPC: H04L12/801 ,  H04L12/26 ,  H04W12/04 ,  H04L12/24 ,  H04M7/00 ,  H04W80/02

Abstract: Aspects of the present disclosure provide mechanisms for count synchronization in a wireless communication network. A respective count value may be maintained for each packet transmitted over a wireless connection, where each count value includes a respective hyper frame number and a respective sequence number. To synchronize a current count value associated with a current packet, a count synchronization may be initiated to transmit at least a current hyper frame number of the current count value over the wireless connection.

公开(公告)号：US20180013685A1

公开(公告)日：2018-01-11

申请号：US15621321

申请日：2017-06-13

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ting Yu ,  Gavin Bernard Horn ,  Shailesh Maheshwari ,  Vanitha Kumar ,  Gang Andy Xiao

IPC: H04L12/801 ,  H04L12/26 ,  H04L12/24 ,  H04M7/00

CPC classification number: H04L47/34 ,  H04L41/5003 ,  H04L43/022 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/106 ,  H04M7/0084 ,  H04W12/04 ,  H04W80/02

Abstract: Aspects of the present disclosure provide mechanisms for count synchronization in a wireless communication network. A respective count value may be maintained for each packet transmitted over a wireless connection, where each count value includes a respective hyper frame number and a respective sequence number. To synchronize a current count value associated with a current packet, a count synchronization may be initiated to transmit at least a current hyper frame number of the current count value over the wireless connection.

公开(公告)号：US20170311208A1

公开(公告)日：2017-10-26

申请号：US15243360

申请日：2016-08-22

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ting Yu ,  Vincent Douglas Park ,  Gavin Bernard Hom

IPC: H04W36/00

CPC classification number: H04W36/0016 ,  H04W36/00 ,  H04W36/0055

Abstract: Methods, systems, and devices for wireless communication are described. A serving base station may determine a handover loss metric associated with a UE that is a candidate for handover. The handover loss metric may be based on connection parameters associated with the serving base station and a target base station, respectively. The serving base station may identify, based on the handover loss metric, a type of handover procedure to perform. The serving base station may perform the handover procedure of the UE to the target base station according to the identified handover type.