公开(公告)号：US20230111742A1

公开(公告)日：2023-04-13

申请号：US18062562

申请日：2022-12-06

Applicant: QUALCOMM Incorporated

Inventor： Vishal Agarwal ,  Huibert Denboer ,  Giriraj Goyal

IPC: H04W12/106 ,  H04W4/80 ,  H04L1/00 ,  H04L1/16 ,  H04L5/00

Abstract: The apparatus receives a first PDU and a first CRC that is based on the first PDU. The first PDU is encrypted based on a first nonce. The apparatus decrypts the first PDU to obtain a first payload and a first cipher stream. The apparatus soft combines the decrypted first payload with a decrypted set of payloads. The set of payloads have been encrypted based on at least one nonce different than the first nonce. The apparatus generates a second CRC based on the soft combined decrypted payloads and based on the first cipher stream. The apparatus determines whether the generated second CRC for the soft combined decrypted payloads passes a CRC check against the first CRC.

公开(公告)号：US11452005B2

公开(公告)日：2022-09-20

申请号：US16843521

申请日：2020-04-08

Applicant: QUALCOMM Incorporated

Inventor： Giriraj Goyal ,  Vishal Agarwal ,  Nitin Raghavendra Kidiyoor

IPC: H04W28/06 ,  H04L69/166 ,  H04L1/16 ,  H04L1/18 ,  H04L69/322 ,  H04W80/02

Abstract: An apparatus may receive, from a second device over a first communications link, a first bitmap indicating a first set of packets received by the second device from a third device; determine a second bitmap indicating a second set of packets received by the first device from the third device, each of the first set of packets and the second set of packets comprising at least a fragment of a PDU; transmit, to the second device, information indicating a third set of packets based on the first bitmap and based on the second bitmap, the third set of packets being unsuccessfully received by the first device from the third device; and receive a fourth set of packets from the second device based on transmission of the information indicating the third set of packets, the fourth set of packets including information from the third set of packets.

公开(公告)号：US11356965B2

公开(公告)日：2022-06-07

申请号：US16843846

申请日：2020-04-08

Applicant: QUALCOMM Incorporated

Inventor： Giriraj Goyal ,  Vishal Agarwal ,  Nitin Raghavendra Kidiyoor

IPC: H04W56/00 ,  H04W4/80 ,  H04L5/00 ,  H04L43/12 ,  H04W84/20

Abstract: Systems and methods for Bluetooth voice link shadowing are disclosed. A primary device may receive an eSCO packet from host device over master slot(s) of an enhanced synchronization connection oriented (eSCO) window within an interval of a host piconet shared between the host and primary devices. A secondary device may sniff for the eSCO packet also over master slot(s) of the eSCO window. When the primary device successfully receives the eSCO packet from the host, it may unconditionally relay the packet to the secondary device. Alternatively, it may conditionally relay the packet when the secondary device does not successfully sniff the packet. When the secondary device successfully sniffs the eSCO packet from the host, it may unconditionally relay the packet to the primary device. Alternatively, it may conditionally relay the packet when the primary device does not successfully receive the packet.

公开(公告)号：US10771201B2

公开(公告)日：2020-09-08

申请号：US16184673

申请日：2018-11-08

Applicant: QUALCOMM Incorporated

Inventor： Vishal Agarwal ,  Giriraj Goyal ,  Srinath Ananthaswamy

IPC: H04L12/801 ,  H04L5/14 ,  H04L29/06 ,  H04L1/20 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. Described techniques may include broadcasting a first Bluetooth packet over a channel bandwidth during a first set of one or more master slots of a periodic broadcast window; performing one or more received signal strength indication (RSSI) measurements during a first set of one or more slave slot of the periodic broadcast window; receiving from one or more receiving devices, based at least in part on the one or more RSSI measurements, one or more negative acknowledgement (NACK) signals corresponding to the first Bluetooth packet; and rebroadcasting, during a second set of one or more master slots of the periodic broadcast window, the first Bluetooth packet based at least in part on the one or more NACK signals.

公开(公告)号：US20200220655A1

公开(公告)日：2020-07-09

申请号：US16239361

申请日：2019-01-03

Applicant: QUALCOMM Incorporated

Inventor： Vishal Agarwal ,  Giriraj Goyal

IPC: H04L1/00 ,  H04W12/10 ,  H04L29/06 ,  H04L12/26 ,  H04L1/16 ,  H04W12/00 ,  H04W28/04

Abstract: Methods, systems, and devices for real time error recovery are described. The method may include a wireless device, such as a secondary wireless device, communicatively linked with another wireless device, such as a primary wireless device, and may include the wireless device identifying a first nonce value that is set based on a first packet counter value associated with a data packet stream between a source wireless device and the other wireless device, identifying a second nonce value that is set based on a second packet counter value associated with the data packet stream, receiving a first packet from the data packet stream, determining a sequence number for the first packet based on receiving the first packet, and decrypting the first packet using the first nonce value or the second nonce value based on the sequence number for the first packet.