COMMUNICATION CONTROL DEVICE AND COMMUNICATION CONTROL METHOD

• US 20140162662A1
• Filed: 05/21/2012
• Published: 06/12/2014
• Est. Priority Date: 05/27/2011
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Nagata, Satoshi, Abe, Tetsushi, Takahashi, Hideaki, Iwamura, Mikio, Nakamura, Takehiro
• Granted Patent: US 9,473,996 B2
• Time in Patent Office: Days
• US Class Current: 455/444
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 36/20 for optimising the interference level
• CPC Class Codes: H04W 72/52 based on load

Abstract

A communication control device includes a parameter acquisition unit which acquires a first parameter determined on the basis of the number of mobile stations connected to the first cell or the number of mobile stations connected to the second cell, a parameter determination unit which changes the number of mobile stations connectable to the first cell or the number of mobile stations connectable to the second cell on the basis of the first parameter, and a parameter notification unit which notifies at least any one of the first base station and the second base station of the determined second parameter.

Claims

1. A communication control device configured to control a first base station forming a first cell having a predetermined cell radius and a second base station forming a second cell having a cell radius smaller than the predetermined cell radius, comprising:

an acquisition unit configured to acquire a first parameter determined on the basis of the number of mobile stations connected to the first cell or the number of mobile stations connected to the second cell;

a determination unit configured to determine a second parameter on the basis of the first parameter acquired by the acquisition unit, the second parameter causing a change in the number of mobile stations connectable to the first cell or the number of mobile stations connectable to the second cell; and

a notification unit configured to notify at least any one of the first base station and the second base station of the second parameter determined by the determination unit.

2. The communication control device according to claim 1, wherein the acquisition unit acquires any of a load factor of the first cell or the second cell, throughput of the first cell or the second cell, and a usage rate of the first cell or the second cell as the first parameter.

3. The communication control device according to claim 1, wherein the determination unit determines any of a radio resource block in a time domain to be allocated to the first cell or the second cell, a radio resource block in a frequency domain to be allocated to the first cell or the second cell, and transmission power of the first cell or the second cell as the second parameter.

4. The communication control device according to claim 3, wherein the determination unit determines any of a size of the radio resource block in the time domain, a size of the radio resource block in the frequency domain, and a value of the transmission power on the basis of any of a load factor ratio between the first cell and the second cell, a throughput ratio between the first cell and the second cell, and a usage rate ratio between the first cell and the second cell.

6. The communication control device according to claim 2, wherein the determination unit determines any of a radio resource block in a time domain to be allocated to the first cell or the second cell, a radio resource block in a frequency domain to be allocated to the first cell or the second cell, and transmission power of the first cell or the second cell as the second parameter.

7. The communication control device according to claim 6, wherein the determination unit determines any of a size of the radio resource block in the time domain, a size of the radio resource block in the frequency domain, and a value of the transmission power on the basis of any of a load factor ratio between the first cell and the second cell, a throughput ratio between the first cell and the second cell, and a usage rate ratio between the first cell and the second cell.

5. A communication control method of controlling a first base station forming a first cell having a predetermined cell radius and a second base station forming a second cell having a cell radius smaller than the predetermined cell radius, comprising the steps of:

acquiring a first parameter determined on the basis of the number of mobile stations connected to the first cell or the number of mobile stations connected to the second cell;

determining a second parameter on the basis of the acquired first parameter, the second parameter causing a change in the number of mobile stations connectable to the first cell or the number of mobile stations connectable to the second cell; and

notifying at least any one of the first base station and the second base station of the determined second parameter.