The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Sep. 14, 2007
Hongke Zhang, Shenzhen, CN;
Sidong Zhang, Shenzhen, CN;
Shen Yang, Shenzhen, CN;
Wei Su, Shenzhen, CN;
Yan Ren, Shenzhen, CN;
Zuzhou Zheng, Shenzhen, CN;
Yajuan Qin, Shenzhen, CN;
Shuai Gao, Shenzhen, CN;
Jianglin Wang, Shenzhen, CN;
Ying Liu, Shenzhen, CN;
Fuyou Miao, Shenzhen, CN;
Hongke Zhang, Shenzhen, CN;
Sidong Zhang, Shenzhen, CN;
Shen Yang, Shenzhen, CN;
Wei Su, Shenzhen, CN;
Yan Ren, Shenzhen, CN;
Zuzhou Zheng, Shenzhen, CN;
Yajuan Qin, Shenzhen, CN;
Shuai Gao, Shenzhen, CN;
Jianglin Wang, Shenzhen, CN;
Ying Liu, Shenzhen, CN;
Fuyou Miao, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A method for packet transmission in an MIP network is disclosed. A mobile node sends to a Home Agent (HA) a first Firewall Detection (FD) packet encapsulated with IP security (IPsec) protocol and a second FD packet encapsulated with the IPsec protocol and User Datagram Payload (UDP) protocol. The mobile node determines whether there is a firewall blocking an IPsec packet between the mobile node and the HA according to a Firewall Detection Reply (FDR) packet from the HA. If there is a firewall, packets are encapsulated with the UDP protocol and binding update and packet exchange are performed; otherwise, binding update and packet exchange are performed. A mobile node for packet transmission is also provided. Embodiments of the present invention enables the mobile node to exchange a packet with a correspondent node when there is a firewall not supporting the IPsec protocol between the mobile node and the HA.