公开(公告)号：US20200374777A1

公开(公告)日：2020-11-26

申请号：US16755695

申请日：2017-11-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongjin Li ,  Wenjie Duan ,  Shuiping Long ,  Qiang Yi ,  Guochao Xiong ,  Liang Hua ,  Fudong Pang ,  Sicong Yang

IPC: H04W36/30 ,  H04W48/18 ,  H04W76/18 ,  H04W36/00 ,  H04W36/32 ,  H04W36/14 ,  H04W76/34

Abstract: A cell selection method includes: when a terminal camps on a first network that does not support a voice service, and voice service needs to be initiated or received, falling back, by the terminal in a circuit switched fallback (CSFB) manner, to a second network that supports the voice service when the terminal fails to establish the voice service with the second network, saving, by the terminal, a location identifier of the first network and a location identifier of the second network to a blacklist. The blacklist is used by the terminal to choose to camp on a cell of the second network when performing CSFB subsequently.

公开(公告)号：US11412434B2

公开(公告)日：2022-08-09

申请号：US16755695

申请日：2017-11-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongjin Li ,  Wenjie Duan ,  Shuiping Long ,  Qiang Yi ,  Guochao Xiong ,  Liang Hua ,  Fudong Pang ,  Sicong Yang

IPC: H04W4/00 ,  H04W36/30 ,  H04W76/34 ,  H04W76/18 ,  H04W36/00 ,  H04W36/14 ,  H04W36/32 ,  H04W48/18

Abstract: A cell selection method includes: when a terminal camps on a first network that does not support a voice service, and voice service needs to be initiated or received, falling back, by the terminal in a circuit switched fallback (CSFB) manner, to a second network that supports the voice service when the terminal fails to establish the voice service with the second network, saving, by the terminal, a location identifier of the first network and a location identifier of the second network to a blacklist. The blacklist is used by the terminal to choose to camp on a cell of the second network when performing CSFB subsequently.