US 12,445,825 B2
Communication method and apparatus
Jing Chen, Shenzhen (CN); Chuankui Jiang, Shanghai (CN); and Zhenyu Tao, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 18, 2022, as Appl. No. 17/698,665.
Application 17/698,665 is a continuation of application No. PCT/CN2020/110627, filed on Aug. 21, 2020.
Claims priority of application No. 201910888796.1 (CN), filed on Sep. 19, 2019; and application No. 202010550068.2 (CN), filed on Jun. 16, 2020.
Prior Publication US 2022/0210702 A1, Jun. 30, 2022
Int. Cl. H04W 8/00 (2009.01); H04W 36/00 (2009.01); H04W 48/18 (2009.01); H04W 60/04 (2009.01)
CPC H04W 8/005 (2013.01) [H04W 36/00222 (2023.05); H04W 48/18 (2013.01); H04W 60/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication method, comprising:
obtaining, by a second mobility management network element in a first network, first information about N intermediate session management network elements when a terminal is to be migrated from a source network to a target network, wherein the N intermediate session management network elements correspond to a source session of the terminal in the source network, wherein the first information indicates a type of each of the N intermediate session management network elements, wherein the type comprises an independent intermediate session management network element or a combined intermediate session management network element, wherein the combined intermediate session management network element is configured to provide session management in the first network and in a second network, wherein the independent intermediate session management network element is configured to provide session management only in either the first network or the second network, wherein the source network is the first network, wherein the target network is the second network, and wherein N is an integer greater than 0; and
determining, by the second mobility management network element based on the type of each of the N intermediate session management network elements, a second intermediate session management network element corresponding to a target session of the terminal in the target network, wherein determining the second intermediate session management network element comprises selecting, by the second mobility management network element when the N intermediate session management network elements comprise the combined intermediate session management network element, the combined intermediate session management network element in the N intermediate session management network elements as the second intermediate session management network element corresponding to a session of the terminal in the second network.