Wireless communication apparatus, method for controlling the same, and program therefor

• US 20060280151A1
• Filed: 05/17/2006
• Published: 12/14/2006
• Est. Priority Date: 06/10/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sawada, Tetsuya
• Granted Patent: US 8,488,463 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/52 based on load

Abstract

A method for controlling a wireless communication apparatus includes request processing for requesting information regarding traffic to an access point, measurement processing for performing data transmission and reception wirelessly on the basis of the information regarding traffic requested by the request processing and measuring traffic during the data transmission and reception, and re-request processing for updating the information regarding traffic to be requested to the access point so as to correspond to the traffic measured by the measurement processing and re-requesting the updated information.

Claims

1. A wireless communication apparatus comprising:

a request unit configured to request information regarding traffic to an access point;

a communication unit configured to perform data communication wirelessly on the basis of the information regarding traffic requested by the request unit;

a measurement unit configured to measure traffic during the data communication performed by the communication unit; and

an update unit configured to update the information regarding traffic to be requested to the access point so as to correspond to the traffic measured by the measurement unit.

2. The wireless communication apparatus according to claim 1, wherein the request unit is configured to request the access point to reserve a predetermined bandwidth.

3. The wireless communication apparatus according to claim 2, wherein reservation of the predetermined bandwidth is requested to the access point on the basis of the updated information regarding traffic updated by the update unit.

4. The wireless communication apparatus according to claim 1, wherein the measurement unit includes:

a time measurement subunit configured to measure a predetermined time; and

a comparison subunit configured to compare a communication time required for a predetermined data communication with the predetermined time measured by the time measurement subunit, and

wherein the update unit is configured to update the information regarding traffic when a difference between the communication time and the predetermined time is equal to or larger than a predetermined amount.

5. The wireless communication apparatus according to claim 1, wherein the measurement unit includes:

a time measurement subunit configured to measure a predetermined time; and

a subunit configured to determine an amount of reduction in a transmission queue of a transmission buffer during the predetermined time measured by the time measurement subunit, and

wherein the update unit is configured to update the information regarding traffic when the determined amount of reduction is equal to or less than a predetermined amount.

6. A method for controlling a wireless communication apparatus, the method comprising:

requesting information regarding traffic to an access point;

performing data communication wirelessly on the basis of the information regarding traffic;

measuring traffic during the data communication; and

updating the information regarding traffic to be requested to the access point so as to correspond to the traffic measured during the data communication.

7. The method according to claim 6, wherein the requesting comprises requesting the access point to reserve a predetermined bandwidth.

8. The method according to claim 7, wherein the predetermined bandwidth is requested to the access point on the basis of the updated information.

9. The method according to claim 6, wherein the measuring traffic during the data communication comprises:

measuring a predetermined time; and

comparing a communication time required for a predetermined data communication with the predetermined time measured, and

wherein the updating comprises updating the information regarding traffic when a difference between the communication time and the predetermined time is equal to or larger than a predetermined amount.

10. The method according to claim 6, wherein the measuring of traffic during the data communication comprises:

measuring a predetermined time; and

determining an amount of reduction in a transmission queue of a transmission buffer during the predetermined time, and

wherein the updating comprises updating the information regarding traffic when the determined amount of reduction is equal to or less than a predetermined amount.

11. A machine-readable medium having stored thereon instructions which, when executed by a wireless communication apparatus, causes the wireless communication apparatus to perform a method comprising:

requesting information regarding traffic to an access point;

performing data communication wirelessly on the basis of the information regarding traffic;

measuring traffic during the data communication; and

updating the information regarding traffic to be requested to the access point so as to correspond to the traffic measured during the data communication.

12. The machine-readable medium according to claim 11, wherein the requesting comprises requesting the access point to reserve a predetermined bandwidth.

13. The machine-readable medium according to claim 12, wherein the predetermined bandwidth is requested to the access point on the basis of the updated information.

14. The machine-readable medium according to claim 11, wherein the measuring traffic during the data communication comprises:

measuring a predetermined time; and

comparing a communication time required for a predetermined data communication with the predetermined time measured, and

wherein the updating comprises updating the information regarding traffic when a difference between the communication time and the predetermined time is equal to or larger than a predetermined amount.

15. The machine-readable medium according to claim 11, wherein the measuring of traffic during the data communication comprises:

measuring a predetermined time; and

determining an amount of reduction in a transmission queue of a transmission buffer during the predetermined time, and

wherein the updating comprises updating the information regarding traffic when the determined amount of reduction is equal to or less than a predetermined amount.

16. A system comprising:

an access point device; and

a wireless device operable to perform wireless data communication with the access point device and measure traffic during the data communication, wherein the wireless device is configured to request the access point device to reserve a defined bandwidth based on the traffic measured during the data communication.

17. The system according to claim 16, wherein the traffic is measured by comparing a communication time required to perform a predetermined data communication with a predetermined time.

18. The system according to claim 17, wherein the wireless device is configured to request the access point device to reserve a different bandwidth when a difference between the communication time and the predetermined time is equal to or larger than a defined threshold.

19. The system according to claim 16, wherein the traffic is measured by determining an amount of reduction in a transmission queue of a transmission buffer during a defined time period.

20. The system according to claim 19 wherein the wireless device is configured to request the access point device to reserve a different bandwidth when the determined amount of reduction in the transmission queue is equal to or less than a defined threshold.