Mobile communication system and service control device

• US 20060034203A1
• Filed: 08/10/2005
• Published: 02/16/2006
• Est. Priority Date: 08/10/2004
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Kozu, Kazuyuki, Otsuki, Katsunobu
• Application Number:
  US11/200,121
• Publication Number:
  US 20060034203A1
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast

Abstract

In a mobile communication system, an upper service control device transmits broadcast data to a plurality of mobile stations through a plurality of lower service control devices, based on a tree structure including a plurality of service control devices. The upper service control device is configured to stop only transmitting the broadcast data to the lower service control device in which it is detected that a failure has occurred, when detecting that the failure has occurred in any one of the plurality of the lower service control devices.

Claims

1. A mobile communication system in which an upper service control device transmits broadcast data to a plurality of mobile stations through a plurality of lower service control devices, based on a tree structure including a plurality of service control devices, wherein:

the upper service control device is configured to stop only transmitting the broadcast data to the lower service control device in which it is detected that a failure has occurred, when detecting that the failure has occurred in any one of the plurality of the lower service control devices.

2. The mobile communication system according to claim 1, wherein:

the upper service control device is configured to restart transmitting the broadcast data to the lower service control device in which it is detected that the failure has been recovered, when detecting that the failure has been recovered in any one of the plurality of the lower service control devices.

3. The mobile communication system according to claim 1, wherein:

the upper service control device is configured to use a common tree structure, when a plurality of kinds of broadcast data are transmitted.

4. A service control device, comprising:

a tree-structure manager configured to manage a tree structure including a plurality of service control devices; and

a transmitter configured to transmit broadcast data to a plurality of mobile stations through a plurality of lower service control devices, based on the tree structure, wherein;

the tree structure manager is configured to delete the lower service control device which has transmitted a failure occurrence signal from the tree structure, when receiving the failure occurrence signal from any one of the plurality of lower service control devices.

5. The service control device according to claim 4, wherein:

the tree-structure manager is configured to add the lower service control device which has transmitted a failure recovery signal to the tree structure, when receiving a failure the failure recovery signal from any one of the plurality of lower service control devices.