COMMUNICATION SYSTEM

• US 20130203450A1
• Filed: 09/27/2011
• Published: 08/08/2013
• Est. Priority Date: 10/01/2010
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Mochizuki, Mitsuru, Maeda, Miho, Iwane, Yasushi, Nonami, Takayuki, Suemitsu, Taisei, Nakai, Yuichi
• Granted Patent: US 9,872,272 B2
• Time in Patent Office: Days
• US Class Current: 455/458
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).

Claims

1. A communication system, which comprises a base station device connected to a core network and a plurality of terminal device groups including communication terminal devices connected to said base station device so as to perform radio communication therewith, wherein

said base station device transmits, to said communication terminal device to be called, a paging message including an equipment identity indicating said communication terminal device,

said communication terminal device starts, upon reception of the paging message including the equipment identity indicating said communication terminal device from said base station device, communication with said base station device, and

a maximum number of said equipment identities allowed to be included within said paging message is set for each of said terminal device groups.

4. The communication system according to claim 1, wherein said paging message includes data to be provided to said communication terminal device.

2. A communication system, which comprises a base station device connected to a core network and a plurality of terminal device groups including communication terminal devices connected to said base station device so as to perform radio communication therewith, wherein

said base station device transmits, to said communication terminal device to be called, a paging message including a calling indicator indicating that said communication terminal device is being called, and

said communication terminal device starts, upon reception of the paging message including the calling indicator indicating that said communication terminal device is being called, communication with said base station device.

7. The communication system according to claim 2, wherein said paging message includes data to be provided to said communication terminal device.

3. A communication system, which comprises a base station device connected to a core network and a plurality of terminal device groups including communication terminal devices connected to said base station device so as to perform radio communication therewith, wherein

said base station device transmits, to said communication terminal device to be called, a paging message notifying calling,

said communication terminal device starts, upon reception of said paging message addressed to the own device from said base station device, communication with said base station device, and

when said paging message is transmitted to the plurality of communication terminal devices included in the different terminal device groups, said paging message is transmitted to each of said terminal device groups over a different radio frame.

8. The communication system according to claim 3, wherein said paging message includes data to be provided to said communication terminal device.

5. A communication system, which comprises a base station device connected to a core network and a plurality of terminal device groups including communication terminal devices connected to said base station device so as to perform radio communication therewith,

wherein said base station device transmits, to said communication terminal device, data to be provided to said communication terminal device and information for notifying whether or not said data has been generated.

6. A communication system, which comprises a base station device connected to a core network and a plurality of terminal device groups including communication terminal devices connected to said base station device so as to perform radio communication therewith, wherein

if a predetermined disconnection condition is satisfied after a predetermined equipment-side-process is performed between said communication terminal device and said base station device, said base station device disconnects the communication with said communication terminal device, and

if a prediction condition of predicting that said base station device has disconnected the communication with said communication terminal device is satisfied, said communication terminal device performs a process for establishing communication with said base station device.