Patent ID: 7499436
Filing Date: 2009-03-03
Classification: H04L,H04W

Abstract:
1. A mobile communication system using a resource reservation protocol comprising: a mobile communication network connected to a core network implementing a resource reservation protocol; a plurality of radio network nodes included in the mobile communication network; means for reserving network resources for a data flow between a data transmission node and a data reception node that passes through the core network and the mobile communication network, on the basis of a resource reservation protocol; and refresh control means for dividing a region for refreshing a reservation state of network resources concerning the flow into a core network side and a mobile communication network side by taking a predetermined radio network node through which the flow passes as a boundary, and conducting refreshment on the mobile communication network side with a frequency higher than that of refreshment on the core network side, wherein the refresh control means comprises: a first timer for measuring a first time interval; a second timer for measuring a second time interval that is shorter than the first time interval; a first processing section responsive to each elapse of the first time interval measured by the first timer, for generating a refresh message in order to refresh the reservation state of network resources of the core network side and transmitting the generated refresh message to the core network side; and a second processing section responsive to each elapse of the second time interval measured by the second timer, for generating a refresh message in order to refresh the reservation state of network resources of the mobile communication network side and transmitting the generated refresh message to the mobile communication network side, independently of the first processing section.