WIRELESS ACCESS POINT DEVICE AND BAND CONTROL METHOD

• US 20150117186A1
• Filed: 05/30/2013
• Published: 04/30/2015
• Est. Priority Date: 11/13/2012
• Status: Abandoned Application

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Uchida, Shigeru
• Application Number:
  US14/394,177
• Publication Number:
  US 20150117186A1
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 72/52 based on load

Abstract

A wireless access point device that is connected to one or more wireless client terminals and communicates with each of the wireless client terminals by using one of a plurality of bandwidths, and includes a transmission managing unit that individually determines a transmission rate with respect to each of the connected wireless client terminals; and a used bandwidth determining unit that calculates an approximation of a system communication capacity on the basis of the transmission rate and the number of the connected wireless client terminals and determines a bandwidth to be used by subjecting the approximation to determination based on a threshold.

Claims

1. A wireless access point device that is connected to one or more wireless client terminals and communicates with each of the wireless client terminals by using one of a plurality of bandwidths, the device comprising:

a transmission-rate determining unit that individually determines a transmission rate with respect to each of connected wireless client terminals;

a calculating unit that calculates an approximation of a system communication capacity on a basis of the transmission rate and number of the connected wireless client terminals; and

a bandwidth determining unit that determines a bandwidth to be used by subjecting the approximation to determination based on a threshold.

2. The wireless access point device according to claim 1, further comprising a reception-rate acquiring unit that acquires a reception rate, which is a transmission rate used by a wireless client terminal for transmission with respect to the device, from each of the wireless client terminals, wherein the calculating unit calculates the approximation on a basis of the transmission rate, the number of the connected wireless client terminals, and the reception rate.

3. The wireless access point device according to claim 1, wherein a threshold to be used for the determination based on a threshold is set to a different value in a case where communication is performed by using a frequency band for which a DFS function is used and in a case where communication is performed by using a frequency band for which a DFS function is not used.

4. The wireless access point device according to claim 3, wherein the threshold is set to a value such that a frequency with which a narrow bandwidth is used is increased in communication in which a frequency band is used for which a DFS function is used.

5. The wireless access point device according to claim 1, wherein a threshold to be used for the determination based on a threshold is set to a different value in a state where a power saving function is operated and in a state where a power saving function is not operated.

6. The wireless access point device according to claim 5, wherein the threshold is set to a value such that a frequency with which a narrow bandwidth is used is increased in communication in a state where a power saving function is operated.

7. The wireless access point device according to claim 1, wherein a threshold to be used for the determination based on a threshold is changed in accordance with interference power of a neighboring channel around a used channel.

8. The wireless access point device according to claim 7, wherein the threshold is set to a value such that a frequency with which a narrow bandwidth is used is increased as interference power of a neighboring channel increases.

9. A band control method of a wireless access point device that is connected to one or more wireless client terminals and communicates with each of the wireless client terminals by using one of a plurality of bandwidths, the method comprising:

a transmission-rate determining step of individually determining a transmission rate with respect to each of connected wireless client terminals;

a calculating step of calculating an approximation of a system communication capacity on a basis of the transmission rate and number of the connected wireless client terminals; and

a bandwidth determining step of determining a bandwidth to be used by subjecting the approximation to determination based on a threshold.