Radio link controlling apparatus, mobile communication system, and radio link controlling method

• US 20030139143A1
• Filed: 01/16/2003
• Published: 07/24/2003
• Est. Priority Date: 01/18/2002
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Sato, Takaaki, Obata, Kazunori
• Granted Patent: US 7,187,929 B2
• Time in Patent Office: Days
• US Class Current: 455/68
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters

Abstract

To provide a radio link controlling apparatus capable of maintaining communication quality at the time of setting a communication line. A radio link controlling apparatus according to the present invention is a radio link controlling apparatus 10 for carrying out communication with a mobile terminal by a control channel for transmission of a control signal and a communication channel for transmission of data, which comprises a communication request receiving device 11 for receiving a communication request including information about a service type, transmitted from the mobile terminal 30; a communication start timing determining device 13 for determining communication start timing by the communication channel on the basis of the information about the service type in the communication request received by the communication request receiving device 11; a control signal generating device 16 for generating a control signal including the information of the communication start timing determined by the communication start timing determining device 13; and a control signal transmitting device 17 for transmitting the control signal generated by the control signal generating device 16, to the mobile terminal 30 by the control channel.

Claims

1. A radio link controlling apparatus for carrying out communication with a mobile terminal by a control channel for transmission of a control signal and a communication channel for transmission of data, the apparatus comprising:

communication request receiving means for receiving a communication request including information about a service type, transmitted from the mobile terminal;

communication start timing determining means for determining communication start timing by the communication channel on the basis of the information about the service type in the communication request received by the communication request receiving means;

control signal generating means for generating a control signal including information of the communication start timing determined by the communication start timing determining means; and

control signal transmitting means for transmitting the control signal generated by the control signal generating means, to the mobile terminal by the control channel.

2. The radio link controlling apparatus according to claim 1, wherein the information about the service type includes information about a communication speed by the communication channel.

5. A mobile communication system for carrying out communication by a control channel for transmission of a control signal and a communication channel for transmission of data, the system comprising:

the radio link controlling apparatus as set forth in one of claims 1; and

a mobile terminal for switching from the control channel to the communication channel to start communication in accordance with the information of the communication start timing in the control signal transmitted from the radio link controlling apparatus by the control channel.

6. A mobile communication system for carrying out communication by a control channel for transmission of a control signal and a communication channel for transmission of data, the system comprising:

the radio link controlling apparatus as set forth in one of claims 2; and

a mobile terminal for switching from the control channel to the communication channel to start communication in accordance with the information of the communication start timing in the control signal transmitted from the radio link controlling apparatus by the control channel.

3. A radio link controlling apparatus for carrying out communication with a mobile terminal by a control channel for transmission of a control signal and a communication channel for transmission of data, the apparatus comprising:

control signal generating means for generating a control signal including information of communication start timing by the communication channel of the mobile terminal; and

control signal transmitting means for transmitting the control signal generated by the control signal generating means, to the mobile terminal by the control channel,

wherein the information of the communication start timing in the control signal generated by the control signal generating means is determined on the basis of a length of the control signal.

4. The radio link controlling apparatus according to claim 3, further comprising communication request receiving means for receiving a communication request transmitted from the mobile terminal,

wherein said control signal generating means generates the control signal on the basis of the communication request received by said communication request receiving means.

7. A mobile communication system for carrying out communication by a control channel for transmission of a control signal and a communication channel for transmission of data, the system comprising:

the radio link controlling apparatus as set forth in one of claims 3; and

a mobile terminal for switching from the control channel to the communication channel to start communication in accordance with the information of the communication start timing in the control signal transmitted from the radio link controlling apparatus by the control channel.

8. A mobile communication system for carrying out communication by a control channel for transmission of a control signal and a communication channel for transmission of data, the system comprising:

the radio link controlling apparatus as set forth in one of claims 4; and

a mobile terminal for switching from the control channel to the communication channel to start communication in accordance with the information of the communication start timing in the control signal transmitted from the radio link controlling apparatus by the control channel.

9. A radio link controlling method of starting communication by a communication channel in a mobile communication system for carrying out communication between a mobile terminal and a radio link controlling apparatus by a control channel for transmission of a control signal and the communication channel for transmission of data, the method comprising:

a communication request transmitting step of transmitting a communication request including information about a service type, from the mobile terminal to the radio link controlling apparatus;

a communication start timing determining step of determining communication start timing by the communication channel on the basis of the information about the service type in the communication request transmitted in the communication request transmitting step;

a control signal generating step of generating a control signal including the information of the communication start timing determined in the communication start timing determining step;

a control signal transmitting step of transmitting the control signal generated in the control signal generating step, from the radio link controlling apparatus to the mobile terminal by the control channel; and

a channel switching step of switching a channel of the mobile terminal from the control channel to the communication channel in accordance with the information of the communication start timing in the control signal transmitted in the control signal transmitting step.

10. The radio link controlling method according to claim 9, wherein the information about the service type includes information about a communication speed by the communication channel.

11. A radio link controlling method of starting communication by a communication channel in a mobile communication system for carrying out communication between a mobile terminal and a radio link controlling apparatus by a control channel for transmission of a control signal and the communication channel for transmission of data, the method comprising:

a control signal generating step of generating a control signal including information of communication start timing by the communication channel of the mobile terminal;

a control signal transmitting step of transmitting the control signal generated in the control signal generating step, from the radio link controlling apparatus to the mobile terminal by the control channel; and

a channel switching step of switching a channel of the mobile terminal from the control channel to the communication channel in accordance with the information of the communication start timing in the control signal transmitted in the control signal transmitting step,

wherein the communication start timing in the control signal generated in the control signal generating step is determined on the basis of a length of the control signal.

12. The radio link controlling method according to claim 11, further comprising a communication request transmitting step of transmitting a communication request from the mobile terminal to the radio link controlling apparatus,

wherein said control signal generating step is to generate the control signal on the basis of the communication request transmitted in the communication request transmitting step.