Communication apparatus, control method therefor, program, and storage medium

• US 9,049,587 B2
• Filed: 12/16/2009
• Issued: 06/02/2015
• Est. Priority Date: 12/22/2008
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sakai, Tatsuhiko
• Primary Examiner(s): Walsh, John B
• Application Number:
  US13/140,814
• Publication Number:
  US 20110258331A1
• Time in Patent Office: 1,994 Days
• Field of Search: 709/228
• US Class Current: 1/1
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Even when multiple providing apparatuses joined in a network are activated as providing apparatuses, a new apparatus can be added to the network without degrading the network security or the ease of use of the providing apparatuses, a apparatus activates an operation as a providing apparatus of a communication-parameter in accordance with the a state notification of an operation as a providing apparatus of a communication-parameter, which is received from another communication apparatus.

Claims

1. A communication apparatus, comprising:

a providing unit configured to operate as a providing apparatus that provides communication parameters to a receiving communication apparatus that receives the provided communication parameters;

a receiving unit configured to receive, from another communication apparatus configured to operate as a providing apparatus that provides communication parameters to the receiving communication apparatus, a state notification message, which indicates a start or end of a communication-parameters providing process performed by the another communication apparatus and is provided by the another communication apparatus configured to operate as the providing apparatus; and

a control unit configured to store state notification information in a memory of the communication apparatus at the start of the communication-parameters providing process performed by the another communication apparatus and to delete the state notification information from the memory of the communication apparatus at the end of the communication-parameters providing process performed by the another communication apparatus,

wherein the communication apparatus does not perform the communication-parameters providing process as a providing apparatus in a case where the state notification information is stored in the memory.

2. The communication apparatus according to claim 1, further comprising a management unit configured to manage status information of a communication-parameters providing process performed by the another providing apparatus.

3. The communication apparatus according to claim 1, wherein, when it is determined that the another communication apparatus is being activated as a providing apparatus for providing communication parameters, the control unit does not activate the providing unit.

4. The communication apparatus according to claim 1, further comprising a notification unit configured to notify the another communication apparatus that it has been selected to transmit the communication parameters to the receiving communication apparatus.

5. The communication apparatus according to claim 1, further comprising a stop unit configured to stop an operation of the providing unit as a providing apparatus, in a case where the state notification message is received during activation of the operation of the providing unit as a providing apparatus.

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

operating as a providing apparatus that provides communication parameters to a receiving communication apparatus that receives the provided communication parameters;

receiving, from another communication apparatus configured to operate as a providing apparatus that provides communication parameters to the receiving communication apparatus, a state notification message, which indicates a start or end of a communication-parameters providing process performed by the another communication apparatus and is provided by the another communication apparatus configured to operate as the providing apparatus;

storing state notification information in a memory of the communication apparatus at the start of the communication-parameters providing process performed by the another communication apparatus; and

deleting the state notification information from the memory of the communication apparatus at the end of the communication-parameters providing process performed by the another communication apparatus,

wherein the communication apparatus does not perform the communication-parameters providing process as a providing apparatus in a case where the state notification information is stored in the memory.

7. The method according to claim 6, further comprising managing status information of a communication-parameters providing process performed by the another providing apparatus.

8. The method according to claim 6, further comprising stopping activation of the providing apparatus when it is determined that the another communication apparatus is being activated as a providing apparatus for providing communication parameters.

9. The method according to claim 6, further comprising notifying the another communication apparatus that it has been selected to transmit the communication parameters to the receiving communication apparatus.

10. A non-transitory computer-readable storage medium storing a computer-executable program of instructions for causing a computer to perform a control method for a communication apparatus, the control method comprising:

operating as a providing apparatus that provides communication parameters to a receiving communication apparatus that receives the provided communication parameters;

receiving, from another communication apparatus configured to operate as a providing apparatus that provides communication parameters to the receiving communication apparatus, a state notification message, which indicates a start or end of a communication-parameters providing process performed by the another communication apparatus and is provided by the another communication apparatus configured to operate as the providing apparatus;

storing state notification information in a memory of the communication apparatus at the start of the communication-parameters providing process performed by the another communication apparatus; and

deleting the state notification information from the memory of the communication apparatus at the end of the communication-parameters providing process performed by the another communication apparatus,

wherein the communication apparatus does not perform the communication-parameters providing process as a providing apparatus in a case where the state notification information is stored in the memory.

11. The non-transitory computer-readable storage medium according to claim 10, wherein the method further comprises managing status information of a communication-parameters providing process performed by the another providing apparatus.

12. The non-transitory computer-readable storage medium according to claim 10, wherein the method further comprises stopping activation of the providing apparatus when it is determined that the another communication apparatus is being activated as a providing apparatus for providing communication parameters.

13. The non-transitory computer-readable storage medium according to claim 10, wherein the method further comprises notifying the another communication apparatus that it has been selected to transmit the communication parameters to the receiving communication apparatus.