公开(公告)号：US11627170B2

公开(公告)日：2023-04-11

申请号：US17368971

申请日：2021-07-07

Applicant: MEDIATEK INC.

Inventor： Shu-Lin Yang

IPC: H04L65/1096 ,  H04W4/16 ,  H04L65/1069 ,  H04L65/1104

Abstract: A first UE receives a first Session Initiation Protocol (SIP) INVITE message requesting the first UE to place the RTT call on hold, during an ongoing Real-Time Text (RTT) call with a second UE. In response to the first SIP INVITE message, the first UE sends a first SIP 200 OK message to the second UE, and the first SIP 200 OK message indicates that the first UE is not allowed to send and receive media data. After sending the first SIP 200 OK message, the first UE receives a second SIP INVITE message requesting the first UE to resume the RTT call. In response to the second SIP INVITE message, the first UE sends a third SIP INVITE message to the second UE, and the third SIP INVITE message indicates that the first UE is allowed to send and receive media data.

公开(公告)号：US11575716B2

公开(公告)日：2023-02-07

申请号：US17365041

申请日：2021-07-01

Applicant: MEDIATEK INC.

Inventor： Rohit Naik ,  Chieh-Fu Chiu ,  Shu-Lin Yang ,  Ssu-Hsien Wu

IPC: H04L65/1016 ,  H04L65/1069 ,  H04L65/1104

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a mobile communication network. The controller determines whether the mobile communication network supports IMS services. The controller establishes a Packet Data Network (PDN) connection or a Protocol Data Unit (PDU) session with the mobile communication network for the IMS services via the wireless transceiver in response to the mobile communication network supporting the IMS services. The controller sends application data on the PDN connection or PDU session via the wireless transceiver.