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：US20160080978A1

公开(公告)日：2016-03-17

申请号：US14854369

申请日：2015-09-15

Applicant: MEDIATEK INC.

Inventor： Shang-Ru Mo ,  Chien-Chun Huang-Fu ,  Yuan-Chieh Lin ,  Yung Hsiang Hsieh ,  Yung-Fu Chen

IPC: H04W36/00 ,  H04W36/04

CPC classification number: H04W36/24 ,  H04W36/14 ,  H04W48/20 ,  H04W76/22

Abstract: Methods and apparatus are provided for enhanced bearer continuity for the 3GPP network. In one novel aspect, the UE detects missing parameters for the inter-RAT bearer change in an idle state. The UE performs bearer preservation procedures to maintain the bearer continuity. In one embodiment, predefined/preconfigured parameter settings are used. In one embodiment, a mapping rule is used to map the missing parameter to a predefined value based on one or more known parameters. In another embodiment, the missing parameters are obtained from the network. In another embodiment, signaling procedures used to obtain the missing parameters. The signaling procedures include a service request, a UE-initiated bearer modification procedure. In one embodiment, the cell reselection is suspended such that the signaling procedure is performed to obtain the missing parameters before the cell reselection. In another embodiment, a RAU procedure is used upon detecting the missing of parameters.

Abstract translation: 提供了用于3GPP网络的增强的承载连续性的方法和装置。 在一个新颖的方面，UE在空闲状态下检测用于RAT间承载变化的缺失参数。 UE执行承载保留过程以维护承载连续性。 在一个实施例中，使用预定义/预配置的参数设置。 在一个实施例中，映射规则用于基于一个或多个已知参数将缺失参数映射到预定义的值。 在另一个实施例中，从网络获得缺失的参数。 在另一个实施例中，用于获得缺失参数的信令程序。 信令过程包括服务请求，UE发起的承载修改过程。 在一个实施例中，暂停小区重选，使得执行信令过程以在小区重选之前获得缺失的参数。 在另一个实施例中，在检测到参数丢失时使用RAU过程。