US 11,722,574 B2
Packet transmission method, communication apparatus, and communication system
Fang Yu, Shenzhen (CN); Yan Li, Beijing (CN); and Ao Lei, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on May 27, 2022, as Appl. No. 17/827,539.
Application 17/827,539 is a continuation of application No. PCT/CN2019/122215, filed on Nov. 29, 2019.
Prior Publication US 2022/0294858 A1, Sep. 15, 2022
Int. Cl. H04L 67/148 (2022.01); H04L 9/40 (2022.01); H04L 69/14 (2022.01)
CPC H04L 67/148 (2013.01) [H04L 63/0281 (2013.01); H04L 63/166 (2013.01); H04L 69/14 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A packet transmission method, comprising:
establishing, by a target transport layer proxy network element, a fourth transport layer connection based on a first context of a source transport layer proxy network element, wherein the first context is a context about packet transmission of the source transport layer proxy network element on a first path; and
when the target transport layer proxy network element receives first indication information, and the first indication information is used to indicate that application context migration between a first application server and a second application server is completed, performing, by the target transport layer proxy network element, transport layer processing on a packet on a second path based on a second context of the target transport layer proxy network element, and transmitting, on the second path, a packet obtained through the transport layer processing, wherein the second path comprises a third transport layer connection and the fourth transport layer connection; the second context is determined based on the first context and the fourth transport layer connection; when the application context migration is being performed, packet transmission between the first application server and a transport layer proxy network element is stopped; and the transport layer proxy network element comprises the source transport layer proxy network element or the target transport layer proxy network element, wherein
the first path is a path established between a terminal device and the first application server, the first path comprises a first transport layer connection and a second transport layer connection, the first transport layer connection is a transport layer connection between the source transport layer proxy network element and the terminal device, the second transport layer connection is a transport layer connection between the source transport layer proxy network element and the first application server, the third transport layer connection is a transport layer connection between the target transport layer proxy network element and the terminal device, and the fourth transport layer connection is a transport layer connection between the target transport layer proxy network element and the second application server.