Route updating method for micromobility network

摘要

A micromobility network includes routers (R) connected in a tree connection and radio base stations (BS) connected to the routers (R) in the lowest layer such that an updating notification of a route from a mobile terminal (MT) is repeated in order from a radio base station (BS) to successive higher order routers (R) to update the route and a packet is distributed along the updated route. In the mobility network, directly lower order routers (R) to each router (R) are numbered to the numbers 1 to n with reference to the direct lower order router accommodation number n, and a route from the radio base station (BS) to the router (R) in the highest layer represented by a route number composed of the numbers of the thus numbered routers (R) is applied to the radio base station (BS). Upon updating notification, the route number is referred to to determine a stage number m of a transmission range and the updating notification is transmitted to a higher order router (R) corresponding to the stage number m.