公开(公告)号：US20250015934A1

公开(公告)日：2025-01-09

申请号：US18710586

申请日：2022-01-20

Applicant: QUALCOMM Incorporated

Inventor： Lei SUN ,  Peng WU ,  Arun Prasanth BALASUBRAMANIAN ,  Jason TAN ,  Yuyi LI ,  Vaishakh RAO ,  Sivaram Srivenkata PALAKODETY ,  Vishal DALMIYA ,  Mariano IBERICO TORRES ,  Shailesh MAHESHWARI ,  Tom CHIN

IPC: H04L1/1829 ,  H04L47/32 ,  H04L47/34

Abstract: Aspects of the present disclosure provide mechanisms for fast hyper frame number (HFN) resynchronization of Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs). A wireless communication device (e.g., a PDCP entity at a wireless communication device) can calculate a current PDCP count of a current PDCP PDU of a plurality of PDCP PDUs received from a radio link control (RLC) sublayer based on a PDCP sequence number (SN) of the current PDCP PDU and an HFN of a first missing PDCP PDU after a successfully received PDCP PDU. The PDCP count may be calculated using the HFN of the first missing PDCP PDU in response to a gap between the PDCP count of the first missing PDCP PDU and the actual PDCP count of the current PDCP PDU being greater than a PDCP window size.

公开(公告)号：US20230224252A1

公开(公告)日：2023-07-13

申请号：US18008810

申请日：2021-07-16

Applicant: QUALCOMM Incorporated

Inventor： Leena ZACHARIAS ,  Arnaud MEYLAN ,  Arun Prasanth BALASUBRAMANIAN ,  Ankur SRIVASTAVA ,  Jason TAN ,  Tao LIU

IPC: H04L47/34

CPC classification number: H04L47/34

Abstract: Aspects of the present disclosure relate to optimization of packet processing when packets are received out of order in sequence. For example, a user equipment (UE) may determine whether a difference between a sequence number of a first packet and a sequence number of a second packet received subsequent to receiving the first packet exceeds a sequence jump threshold. The UE may disregard the second packet from processing in response to at least determining that the difference is greater than the sequence jump threshold. The UE may receive and process a plurality of packets respectively associated with a plurality of sequence numbers that are greater than the sequence number of the first packet and less than the sequence number of the second packet.

公开(公告)号：US20240236009A1

公开(公告)日：2024-07-11

申请号：US18153105

申请日：2023-01-11

Applicant: QUALCOMM Incorporated

Inventor： Arun Prasanth BALASUBRAMANIAN ,  Arnaud MEYLAN ,  Jason TAN ,  Shailesh MAHESHWARI

IPC: H04L47/34 ,  H04L47/28 ,  H04W28/10

CPC classification number: H04L47/34 ,  H04L47/28 ,  H04W28/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver device may receive a first packet of a plurality of packets included in a reordering window of the receiver device. The receiver device may receive a second packet of the plurality of packets. The receiver device may provide the first packet and the second packet based at least in part on expiration of a reordering timer. The receiver device may receive a third packet of the plurality of packets at a third time, wherein the first packet, the second packet, and the third packet are received sequentially. The receiver device may provide a set of packets including the first packet, the third packet, and the second packet in order, to a higher layer in accordance with a timer that is shorter than a length of the reordering window. Numerous other aspects are described.

公开(公告)号：US20230163883A1

公开(公告)日：2023-05-25

申请号：US17922746

申请日：2021-06-22

Applicant: QUALCOMM Incorporated

Inventor： Karthik THIRUKANNAN ,  Arun Prasanth BALASUBRAMANIAN ,  Jason TAN ,  Shailesh MAHESHWARI ,  Ankur SRIVASTAVA ,  Mohammad ASHRAF ,  Rahul MARINGANTI ,  Tom CHIN

IPC: H04L1/1607 ,  H04L1/1829

CPC classification number: H04L1/1642 ,  H04L1/1848

Abstract: A wireless communication device is described. The wireless communication device includes a memory and a processor in electronic communication with the memory. The processor is configured to determine a packet data convergence protocol (PDCP) acket count corresponding to a last radio link control (RLC) packet received in-sequence. The processor is also configured to detect a missing PDCP packet based on a comparison of the PDCP packet count and a sequence number of a last PDCP packet received in-sequence.

公开(公告)号：US20240236010A1

公开(公告)日：2024-07-11

申请号：US18153113

申请日：2023-01-11

Applicant: QUALCOMM Incorporated

Inventor： Arun Prasanth BALASUBRAMANIAN ,  Arnaud MEYLAN ,  Jason TAN

IPC: H04L47/34

CPC classification number: H04L47/34

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver device may receive a first packet of a plurality of packets included in a reordering window of the receiver device. The receiver device may receive a second packet of the plurality of packets. The receiver device may provide the first packet and the second packet based at least in part on expiration of a reordering timer. The receiver device may receive a third packet of the plurality of packets at a third time, wherein the first packet, the second packet, and the third packet are received sequentially. The receiver device may provide a set of packets including the first packet, the third packet, and the second packet in order, to a higher layer in accordance with a timer that is shorter than a length of the reordering window. Numerous other aspects are described.

公开(公告)号：US20210067456A1

公开(公告)日：2021-03-04

申请号：US16670569

申请日：2019-10-31

Applicant: QUALCOMM Incorporated

Inventor： Arnaud MEYLAN ,  Xinchen ZHANG ,  Ralph Akram GHOLMIEH ,  Gang XIAO ,  Rudhir Varna UPRETEE ,  Vinay Rajkumar PATIL ,  Shailesh MAHESHWARI ,  Jason TAN ,  Arun Prasanth BALASUBRAMANIAN ,  Pulkit HANSWAL

IPC: H04L12/835 ,  H04L12/801 ,  H04L12/26 ,  H04L1/00 ,  H04W28/04 ,  H04W28/12 ,  H04W28/14

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a method may include simulating a degradation of at least one of a first wireless communication link with a network or a different second wireless communication link with the network based on detecting that a first set of one or more packets, which were received via the first wireless communication link with the network and were added to a packet buffer, and a second set of one or more packets, which were received via the different second wireless communication link with the network and were added to the packet buffer, satisfy a threshold occupancy of the packet buffer. Numerous other aspects are provided.