公开(公告)号：US20200008268A1

公开(公告)日：2020-01-02

申请号：US16453085

申请日：2019-06-26

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Chieh Tien ,  Chi-Hsien Chen ,  Shang-Ru Mo

IPC: H04W80/10 ,  H04W76/11 ,  H04W76/18 ,  H04W76/30 ,  H04W76/25

Abstract: A method for Procedure Transaction Identity (PTI) exception handling on protocol data unit (PDU) session modification and establishment procedure is proposed. If a UE receives a PDU SESSION MODIFICATION COMMAND message in which the PTI value is an assigned value that does not match any PTI in use, the UE stays in the current 5GSM state and sends a 5GSM STATUS message including 5GSM cause #47 “PTI mismatch”, and the network will send another COMMAND message with the correct PTI value. If the UE receives a PDU SESSION ESTABLISHMENT ACCEPT or REJECT message in which the PTI value is an assigned value that does not match any PTI in use, the UE responds with a 5GSM STATUS message including 5GSM cause #47 “PTI mismatch”, and the network will send another ACCEPT or REJECT message with the correct PTI value.

公开(公告)号：US10034325B2

公开(公告)日：2018-07-24

申请号：US15273921

申请日：2016-09-23

Applicant: MEDIATEK INC.

Inventor： Yuan-Chieh Lin ,  Chien-Chun Huang-Fu ,  Yu-Syuan Jheng ,  Marko Niemi ,  Chi-Hsien Chen

IPC: H04W48/06 ,  H04W76/18 ,  H04W28/02 ,  H04W76/02 ,  H04W52/02

CPC classification number: H04W76/18 ,  H04W28/0289 ,  H04W48/06 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262

Abstract: AT commands are used for controlling Mobile Termination (MT) functions and GSM/UMTS network services from a Terminal Equipment (TE) through Terminal Adaptor (TA). 3GPP introduces multiple backoff timers and barring to solve network congestion problem. However, a TE does not know the timer value and the barring status. In accordance with one novel aspect, a new AT command interface that can respond timer value and barring status to the TE is proposed. It reduces wasteful retries and saves power consumption of the TE. Through the new AT command interface, the TE can query backoff timer status. Via unsolicited result code (URC), the MT can detect backoff timer status change and report updated backoff timer status to the TE.