MOBILE UNIT MANAGING NETWORK AND PATH ESTABLISHING METHOD TO BE USED FOR SAME

摘要

A mobile unit managing network is provided which is capable of supporting a communication area being wider than ever by one highest-layer router (R1). A radio base station. (BS3) transfers a path updating notification fed from a mobile terminal (MN1) to a lowest-layer router (Rd). The lowest-layer router (Rd) establishes a path in which a network address "xxxx::1" to the mobile terminal (MN1) exists in the radio base station (BS3) and transfers path information to an intermediate-layer router (Ra) serving as an upward router. The intermediate-layer router (Ra) establishes a path in which the network address "xxxx::1" to the mobile terminal (MN1) exists in the lowest-layer router (Rd) and transfers path information to the highest-layer router (R1). The highest-layer router (R1), when having received path information notification from the intermediate-layer router (Ra), establishes a path in which the network address "xxxx::1" to the mobile terminal (MN1) exists in the intermediate-layer router (Ra).