公开(公告)号：US11711865B2

公开(公告)日：2023-07-25

申请号：US17138863

申请日：2020-12-30

Applicant: MediaTek Inc.

Inventor： Yu-Lun Chang ,  Shih Chieh Liao

IPC: H04W76/19 ,  H04W76/27

CPC classification number: H04W76/19 ,  H04W76/27

Abstract: Examples pertaining to detection of radio resource control (RRC) reestablishment without reconfiguration in mobile communications. An apparatus reestablishes a RRC connection with a wireless network. The apparatus then detects whether a type of radio bearer service is resumed upon reestablishing the RRC connection. In response to detecting that the type of radio bearer service is not resumed, the apparatus resumes the type of radio bearer service.

公开(公告)号：US20220210855A1

公开(公告)日：2022-06-30

申请号：US17138863

申请日：2020-12-30

Applicant: MediaTek Inc.

Inventor： Yu-Lun Chang ,  Shih Chieh Liao

IPC: H04W76/19 ,  H04W76/27

Abstract: Examples pertaining to detection of radio resource control (RRC) reestablishment without reconfiguration in mobile communications. An apparatus reestablishes a RRC connection with a wireless network. The apparatus then detects whether a type of radio bearer service is resumed upon reestablishing the RRC connection. In response to detecting that the type of radio bearer service is not resumed, the apparatus resumes the type of radio bearer service.

公开(公告)号：US11310661B2

公开(公告)日：2022-04-19

申请号：US16790762

申请日：2020-02-14

Applicant: MEDIATEK INC.

Inventor： Yu-Lun Chang ,  Shih-Chieh Liao

IPC: H04L9/32 ,  H04W12/04 ,  H04L29/06 ,  H04W12/08 ,  H04W12/06

Abstract: A communications apparatus includes a transceiver and a processor. The processor is configured to perform operations comprising: performing a Non Access Stratum (NAS) security mode command procedure to derive a set of NAS key(s); transmitting a NAS security mode complete message to a network device for informing that the NAS security mode command procedure is complete; receiving an RRCReconfiguration message indicating derivation of a set of Access Stratum (AS) keys from the network device when an acknowledge message associated with the NAS security mode complete message has not been received; and performing a NAS procedure to communicate with the network device by using the set of NAS key(s).

公开(公告)号：US20210258779A1

公开(公告)日：2021-08-19

申请号：US16790762

申请日：2020-02-14

Applicant: MEDIATEK INC.

Inventor： Yu-Lun Chang ,  Shih-Chieh Liao

IPC: H04W12/04 ,  H04L29/06 ,  H04W12/06 ,  H04W12/08

Abstract: A communications apparatus includes a transceiver and a processor. The processor is configured to perform operations comprising: performing a Non Access Stratum (NAS) security mode command procedure to derive a set of NAS key(s); transmitting a NAS security mode complete message to a network device for informing that the NAS security mode command procedure is complete; receiving an RRCReconfiguration message indicating derivation of a set of Access Stratum (AS) keys from the network device when an acknowledge message associated with the NAS security mode complete message has not been received; and performing a NAS procedure to communicate with the network device by using the set of NAS key(s).