Mobile communication system

• US 20050185630A1
• Filed: 03/11/2005
• Published: 08/25/2005
• Est. Priority Date: 11/07/2002
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Tajima, Yoshiharu, Kawabata, Kazuo, Hamano, Yuichiro, Aoki, Nobuhisa, Sugiyama, Katsumasa, Sakai, Masashi
• Application Number:
  US11/078,208
• Publication Number:
  US 20050185630A1
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04W 36/0007 for multicast or broadcast services, e.g. MBMS multicast or broadcast application services H04W4/06; resource management for broadcast services H04W72/30; connection management for selective distribution or broadcast H04W76/40
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

In a communication system that transmits broadcast data from a base station, a judgment standard for determining whether broadcast data is transmitted to each zone is held and the transmission and transmission stoppage of the broadcast data are controlled for each zone in accordance with the judgment standard. Furthermore, a judgment standard for determining the type of a wireless channel for transmitting the broadcast data to each zone is held, and the channel type for transmitting the broadcast data to each zone is determined in accordance with the judgment standard.

Claims

1. A mobile communication system that transmits broadcast data or multicast data from a base station, comprising:

means for holding a judgment standard for determining whether the data is transmitted to each zone in a case where the service areas of one or more base stations are combined to establish one zone or in a case where the service areas are divided into a plurality of zones; and

control means for controlling the transmission and transmission stoppage of the data in accordance with the judgment standard.

2. The mobile communication system according to claim 1, wherein the judgment standard is a determination of whether a terminal receiving services exists in a zone and the control means stops the transmission of the data if such a terminal does not exist.

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

means that, when a terminal receiving a supply of services exists in a region that allows services to be received from a base station of another zone and the terminal requests wireless-channel data transmission from the base station, implement control such that the data is transmitted on the wireless channel from the base station on the basis of the request.

4. The mobile communication system according to claim 1, comprising:

detection means for detecting the existence of a terminal receiving a supply of services in a region that allows services to be received from another zone; and

means for implementing control such that the data is transmitted on a wireless channel from the base station of the other zone.

5. The mobile communication system according to claim 4, wherein the detection means detects that a terminal has moved to a region that allows services to be received from another zone on the basis of a measurement report value received from the terminal.

6. The mobile communication system according to claim 5, wherein the terminal transmits the measurement report value when a measurement value report condition is satisfied, this condition being that the reception quality in the other zone is continuously favorable for a fixed time or more.

7. The mobile communication system according to claim 1, comprising:

transmission control means for implementing control such that, when a terminal receiving a supply of services requests, from a movement-source base station, a wireless-channel data transmission of a movement-destination base station, a wireless channel from the movement-destination base station is determined on the basis of the request and the data is transmitted on the wireless channel.

8. The mobile communication system according to claim 7, comprising:

means for controlling the disconnection of a user data transmission path of a movement-source base station in accordance with a request from the terminal,

wherein the movement-destination base station establishes an user data transmission path in a movement-destination zone with respect to the terminal on the basis of the transmission instruction from said transmission control means and, after zone movement has completed, the terminal issues a request to said disconnection control means to stop data transmission by the movement-source base station via the movement-destination base station and the movement-source base station disconnects the user data transmission path in accordance with a disconnection instruction from the disconnection control means.

9. The mobile communication system according to claim 1, comprising:

means for detecting that a terminal receiving a supply of services exists in a region that allows services to be received from a neighboring zone; and

transmission control means for implementing control such that the data is transmitted on a wireless channel from the neighboring zone on the basis of the detection result.

10. The mobile communication system according to claim 9, comprising:

means for controlling the disconnection of a user data transmission path of a movement-source base station in accordance with a request from the terminal,

wherein a movement-destination base station establishes the user data transmission path in the movement-destination zone with respect to the terminal on the basis of a transmission instruction from the transmission control means and, after zone movement has completed, the terminal issues a request to the disconnection control means to stop data transmission by the movement-source base station via the movement-destination base station and the movement-source base station disconnects the user data transmission path in accordance with a disconnection instruction from the disconnection control means.

11. The mobile communication system according to claim 1, wherein, when a terminal makes a request for a wireless network control device of a wireless-channel data transmission of a movement-destination base station via movement-source base station upon detecting movement to a region that allows services to be received from a neighboring zone or when it is detected that the terminal exists in the region that allows services to be received from neighboring zone, the wireless network control device establishes a user data channel between its own device and core network, determines a wireless channel of the movement-destination base station, and transmits the data received from the core network to the terminal on the wireless channel.

12. The mobile communication system according to claim 11, wherein the wireless network control device disconnects the user data channel established between its own device and the core network in accordance with a request from the terminal following zone movement.

13. A wireless network control device in a mobile communication system that transmits broadcast data or multicast data from a base station, comprising:

means for holding a judgment standard for determining whether the data is transmitted to each zone in a case where the service areas of one or more base stations are combined to establish one zone or in a case where the service areas are divided into a plurality of zones; and

control means for controlling the transmission and transmission stoppage of the data in accordance with the judgment standard.

14. A base station in a mobile communication system that transmits broadcast data or multicast data from a base station, comprising:

means for holding a judgment standard for determining whether the data is transmitted to each zone in a case where the service area of the base station is one zone or in a case where the service area is divided into a plurality of zones; and

control means for controlling the transmission and transmission stoppage of the data in accordance with the judgment standard.

15. A mobile communication system that transmits broadcast data or multicast data from a base station, comprising:

means for holding a judgment standard for determining type of a wireless channel for transmitting the data to each zone in a case where the service areas of one or more base stations are combined to establish one zone or in a case where the service areas are divided into a plurality of zones; and

means for determining the type of the wireless channel for transmitting the data in accordance with the judgment standard.

16. The mobile communication system according to claim 15, wherein the judgment standard is a number of terminals receiving services that exist in a zone, or a power required to supply services, or a interference amount produced when services are supplied.

17. The mobile communication system according to claim 16, comprising:

means for calling terminals receiving a supply of services one by one or simultaneously in group unit and calculating the power required to supply services or the interference amount produced when services are supplied.

18. The mobile communication system according to claim 15, comprising:

detection means for detecting the existence of a terminal receiving a supply of services in a region that allows services to be received from another zone; and

means for implementing control such that the data is transmitted on a wireless channel from the base station of the other zone.

wherein the terminal transmits the measurement report value when a measurement value report condition is satisfied, the condition being that the reception quality in the other zone is continuously favorable for a fixed time or more; and

the detection means detects that the terminal has moved to the region that allows services to be received from another zone on the basis of a measurement report value received from the terminal.

19. The mobile communication system according to claim 15, comprising:

means that, when a terminal receiving a supply of services exists in a region that allows services to be received from a base station in another zone and the terminal requests a wireless channel for receiving the services from the base station, determine a wireless channel on the basis of the request; and

means for implementing control such that the data is transmitted on the wireless channel.

20. The mobile communication system according to claim 15, comprising:

detection means for detecting the existence of a terminal receiving a supply of services in a region that allows services to be received from other zone; and

means for determining a wireless channel when said existence of the terminal is detected and implementing control such that the data is transmitted on the wireless channel.

21. The mobile communication system according to claim 20, wherein the detection means detects, on the basis of a measurement report value received from the terminal, that the terminal has moved to the region that allows services to be received from the other zone.

22. The mobile communication system according to claim 15, comprising:

transmission control means for implementing control such that, when a terminal receiving a supply of services requests, from a movement-source base station, a wireless-channel data transmission of a movement-destination base station, a wireless channel from the movement-destination base station is determined on the basis of the request and the data is transmitted on the wireless channel.

23. The mobile communication system according to claim 22, comprising:

means for controlling the disconnection of a user data transmission channel of the movement-source base station in accordance with a request from the terminal,

wherein the movement-destination base station establishes a user data transmission path and a wireless channel in a movement-destination zone with respect to the terminal on the basis of a transmission instruction from the transmission control means and, after zone movement has completed, the terminal issues a request to the disconnection control means to stop data transmission by the movement-source base station via the movement-destination base station and the movement-source base station disconnects the user data transmission path in accordance with a disconnection instruction from the disconnection control means.

24. The mobile communication system according to claim 15, comprising:

means for detecting that a terminal receiving a supply of services exists in a region that allows services to be received from a neighboring zone; and

means for implementing control such that the data is transmitted on a wireless channel from the neighboring zone on the basis of the detection result.

25. The mobile communication system according to claim 24, comprising:

means for controlling the disconnection of a user data transmission path of a movement-source base station in accordance with a request from the terminal,

wherein a movement-destination base station establishes a user data transmission path and a wireless channel in a movement-destination zone with respect to the terminal on the basis of a transmission instruction from the transmission control means and, after zone movement has completed, the terminal issues a request to the disconnection control means to stop data transmission by the movement-source base station via the movement-destination base station and the movement-source base station disconnects a user data transmission channel in accordance with a disconnection instruction from the disconnection control means.

26. The mobile communication system according to claim 15, wherein, when a terminal makes a request for a wireless control device of a wireless-channel data transmission from a movement-destination base station, via a movement-source base station upon detecting movement to a region that allows services to be received from another zone or when it is detected that the terminal exists in a region that allows services to be received from another zone, the wireless network control device establishes a user data channel between its own device and a core network, determines a wireless channel of the movement-destination base station and transmits the data received from the core network to the terminal on the wireless channel.

27. The mobile communication system according to claim 26, wherein the wireless network control device cancels the user data disconnects established between its own device and the core network in accordance with a request from the terminal following zone movement.

28. A mobile communication system that transmits broadcast data or multicast data, comprising:

a base station that transmits the data to a terminal of each zone;

a wireless network control device that transmits channel setting information to the terminal of each zone via the base station; and

a terminal that, upon moving to a region that allows services to be received from another zone, changes a current wireless channel to a wireless channel corresponding to said zone that is acquired from the channel setting information and receives a supply of services.

29. A mobile terminal in a mobile communication system that transmits broadcast data or multicast data, comprising:

means for receiving channel setting information that is transmitted from a wireless network control device via a base station;

means for detecting movement to a region that allows services to be received from another zone; and

means for changing a current wireless channel to a wireless channel corresponding said another zone that is acquired from the channel setting information in the event of movement to said region,

wherein the terminal receives a supply of services from the wireless channel.

30. The mobile terminal according to claim 29, comprising:

means for requesting stoppage of data transmission by a movement-source base station via a movement-destination base station of said zone after zone movement has completed.

31. A mobile communication system that transmits broadcast data or multicast data, comprising:

a base station that transmits the data to a terminal of each zone;

a wireless network control device that transmits channel setting information to the terminal of each zone via the base station; and

a terminal for receiving the data from the base station by changing a channel type to a new channel type when the terminal moves another zone;

wherein, the terminal requests anew channel type for receiving a supply of services when the terminal moves to another zone;

the wireless network control device communicates the channel setting information to the terminal in response to the channel type request; and

the terminal acquires the type of the wireless channel which supplies services in said another zone from the channel setting information and receives the data from the base station in said another zone by changing the current channel-type to the new channel type thus acquired.

32. A mobile terminal in a mobile communication system that transmits broadcast data or multicast data, comprising:

means for detecting movement to a region that allows services to be received from another zone;

means for requesting a channel type for receiving a supply of services in said another zone when the terminal moves to this zone;

means for receiving the channel type communicated by a wireless network control device in response to the channel type request; and

means for receiving the data from a base station in said another zone by changing a current channel type to the received channel type.

33. The mobile terminal according to claim 32, comprising:

means for performing zone movement by changing the current wireless channel to the channel type communicated by the wireless network control device.

34. The mobile terminal according to claim 32, comprising:

means for requesting stoppage of data transmission by a movement-source base station via the movement-destination base station in said another zone, after the zone movement has completed.

35. A mobile communication system that transmits broadcast data or multicast data comprising;

a terminal for performing zone movement by changing a current wireless channel to a channel type established by the system and;

a network device for detecting that the terminal has moved to other zone and communicating to the terminal a type of a wireless channel which supplies services to the terminal in the other zone;

wherein

the terminal receives the data from the base station by changing the current wireless channel to the communicated wireless channel type.

36. A mobile terminal in a mobile communication system that transmits broadcast data or multicast data, comprising:

means for receiving a type of a wireless channel for supplying services in other zone that is communicated by a network device when the terminal moves to the other zone; and

means for receiving the data from a base station by changing a current wireless channel type to the communicated wireless channel type.

37. The mobile terminal according to claim 36, comprising:

means for performing zone movement by changing the current wireless channel to the channel type communicated by the network device.

38. The mobile terminal according to claim 36, comprising:

means for requesting stoppage of data transmission by a movement-source base station via a movement-destination base station in the other zone, after the zone movement has completed.

39. A wireless network control device in a mobile communication system that transmits broadcast data or multicast data from a base station, comprising:

means for holding a judgment standard for determining a type of wireless channel for transmitting the data to each zone in a case where the service areas of one or more base stations are combined to establish one zone or in a case where the service areas are divided into a plurality of zones; and

means for determining the type of the wireless channel for transmitting the data in accordance with the judgment standard.

40. A base station in a mobile communication system that transmits broadcast data or multicast data, comprising:

means for holding a judgment standard for determining a type of wireless channel for transmitting the data to each zone in a case where the service area of the base station is divided into a plurality of zones; and

means for determining the type of the wireless channel for transmitting the data in accordance with the judgment standard.