公开(公告)号：WO2020123403A1

公开(公告)日：2020-06-18

申请号：PCT/US2019/065271

申请日：2019-12-09

Applicant: QUALCOMM INCORPORATED

Inventor： KOKENGADA, Sanjeeth Ganapathy ,  BATTINI, Sarat Chandra ,  T.V., Vinaya Kumara ,  SUBRAMANIAN, Ramachandran ,  GHOSH, Arindam

IPC: H04M11/06 ,  H04W4/12 ,  H04W88/06

Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications systems may transition between a real-time texting (RTT) mode and a text teletypewriter (TTY) mode and vice versa, on a user equipment (UE). A UE may make a determine to transition between two texting modes while coordinating the transfer of text data between the different modes. Some wireless communications systems may also transition a UE between a packet switched network and a circuit switched network without loss of signal and consistent text data delivery during the communication without losing the text data during the transition between the two coverage areas. Transitioning between modes and networks may provide a user with interoperability and the benefit of conveniently switching between two modes without service interruption.

公开(公告)号：WO2018226303A1

公开(公告)日：2018-12-13

申请号：PCT/US2018/024839

申请日：2018-03-28

Applicant: QUALCOMM INCORPORATED

Inventor： KONAPPA, Srinivasa Ragimakalahally ,  MOHAN, Prashanth ,  T.V., Vinaya Kumara ,  MUNIBYRAIAH, Radvajesh

IPC: H04W36/00 ,  H04W80/10 ,  H04L29/06

CPC classification number: H04W36/0011 ,  H04L65/1006 ,  H04L65/80 ,  H04W36/08 ,  H04W36/30 ,  H04W80/10

Abstract: Allocation failures may occur on a network during handovers. Therefore, a user equipment (UE) may include a configurable timer that is configured to begin once an allocation or grant is revoked or a quality-of-service (QoS) condition is unsatisfied. A UE may be configured to wait for an allocation or grant or may be configured to elicit an allocation or grant. During a network connection, a UE may determine that the allocation or grant is unreceived before expiration of the configurable timer. Based on the determination that the allocation or grant is unreceived before expiration of the configurable timer, the UE may transit a session initiation protocol (SIP) re-invite message in order to allow a network to bring up dedicated bearers for the network connection.