Patent ID: 8254311
Filing Date: 2012-08-28
Classification: H04W

Abstract:
1. A binding update method, comprising: transmitting, from a mobile terminal to a home agent of the mobile terminal, a first message containing a new address that is a destination to which the home agent forwards; updating, by the home agent, based on the first message, a cache in which a home address of the mobile terminal is associated with an address to which the home agent forwards; transmitting, from the home agent, a second message, as a reply to the first message, to the mobile terminal; transmitting, from the mobile terminal to the home agent when receiving the second message, a third message notifying that the second message has been received, wherein updating the cache, by home agent, occurs after receiving the third message, and wherein the home agent of the mobile terminal sets, in the cache, a change-in-progress flag indicating that a received message is not forwarded during updating of the cache based on the first message, the home agent of the mobile terminal does not forward the received message while the change-in-progress flag is set.