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AssigneePanasonic Corporation
InventorsJun Hirano, Chan Wah Ng, Tien-Ming Benjamin Koh, Pek Yew Tan
Estimating the term…
According to the present invention, connection can be always maintained between the mobile node and the access router, and disruption of on-going transport session can be prevented by making effective use of two architectures (hierarchical and mesh architectures). The mobile nodes 1000-1, 1000-2 and 1000-3 are attached to the access router 1100-1. When the mobile node maintains link layer connectivity with the access router, it is in the hierarchical mode, whereas when the link layer connectivity is lost, it enters the mesh mode. In the mesh mode, the mobile node attempts to establish virtual link layer connectivity with the access router through other nodes by using mesh network protocol such as MANET. In the mesh mode, the packet is capsulated between the mobile node and the access router when the mobile node and the peer 1400-1 communicate with each other.
A communication method in a network system where a mobile communication node sends and receives a packet to and from another communication node through an access router which the mobile communication node is associated to, comprising the steps of:
A mobile communication node for sending and receiving a packet to and from another communication node through an access router, the mobile communication node being associated to the access router, the mobile communication node being configured so as to transmit the packet directly between the mobile communication node and the access router when a link layer connection is established between the mobile communication node and the access router, and to transmit the packet between the mobile communication node and the access router through multiple-hop in a mobile ad-hoc network fashion when the link layer connection is not established between the mobile communication node and the access router, and
An access router for forwarding a packet transmitted between a mobile communication node and another node, the mobile communication node being associated to the access router, the access router being configured so as to store a hierarchical mode state or a mesh mode state as a current state of the mobile communication node, the hierarchical mode state indicating that the link layer connection with the mobile communication node is established, the mesh mode state indicating that the link layer connection is not established, and being further configured to, when receiving the packet which is transmitted in the mobile-ad hoc network fashion and is addressed to the mobile communication node, forward the packet directly to the mobile communication node in case that the current state of the mobile communication node is the hierarchical mode state, and forward the packet into its access network in the mobile ad-hoc network fashion in case that the current state of the mobile communication node is the mesh mode state.
Dependencies are inferred from the claim text.