Invention Application
US20050089041A1 Method and apparatus for assisting a mobile node to transmit a packet
审中-公开
用于辅助移动节点发送分组的方法和装置
- Patent Title: Method and apparatus for assisting a mobile node to transmit a packet
- Patent Title (中): 用于辅助移动节点发送分组的方法和装置
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Application No.: US10695608Application Date: 2003-10-28
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Publication No.: US20050089041A1Publication Date: 2005-04-28
- Inventor: Ajaykumar Idnani , Timothy Wilson
- Applicant: Ajaykumar Idnani , Timothy Wilson
- Assignee: MOTOROLA, INC.
- Current Assignee: MOTOROLA, INC.
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L12/56 ; H04L29/06 ; H04L29/12
Abstract:
A mobility-unaware mobile node (MN) (112) in a visited subnet (110) different from its home subnet (108) sends (302) an ARP Request to discover a first MAC address of a device in the home subnet, the ARP Request containing an IP address assigned to the device. A software program, designated host (106) in the visited subnet and corresponding method of assisting the MN (112) receives (304) the ARP Request, and determines that the IP address does not belong to the visited subnet. In response, the designated host returns (310) an ARP Response containing its own MAC address, which the mobile node will assume to be the MAC address of the device in the home subnet and use for sending packets to the device.
Information query
