Wireless communication system, device, and control method for searching multiple communication frequency channels and processing cryptographic communication in an infrastructure mode using a received communication parameter including information of an encrypted key
First Claim
1. A wireless communication device comprising:
- one or more processors; and
one or more memories including instructions that, when executed by the one or more processors, cause the device to;
determine whether an operator has made a first operation for establishing a communication channel;
search, using one of a plurality of frequency channels in turn, another wireless communication device at which a second operation for establishing a communication channel has been made;
establish, in a case where the another wireless communication device at which the second operation has been made is detected within a predetermined time period from when the first operation has been made, a communication channel with the another wireless communication device even if the predetermined time period does not elapse from when the first operation has been made, so that a wireless network between the wireless communication device and the another wireless communication device is formed;
wherein the predetermined time period is a time period that the wireless communication device continues a process for establishing a communication channel in a case where the another wireless communication device at which the second operation for establishing a communication channel has been made is not detected;
receive, from the another wireless communication device on the formed wireless network, a communication parameter including information of an encryption key which is used for a cryptographic communication in an infrastructure mode of a wireless local area network common to the formed wireless network; and
perform processing for the cryptographic communication in the infrastructure mode with the another wireless communication device using the received communication parameter including information of the encryption key.
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Accused Products
Abstract
This invention has as its object to set a one-to-one relationship upon establishing a wireless communication channel between a wireless communication device on the information transmitting side and a wireless communication device that receives and processes the information even in an environment including a plurality of wireless communication devices, and to assure simple user'"'"'s operations at least until the communication channel is established. To this end, when the user inputs a wireless communication channel establishment instruction to both a digital camera and printer having wireless communication functions, these devices execute wireless communication establishment processes within an allowable time period which is specified by a time set in a timer and a retry count. When the devices can seize each other within that time period, the communication channel is established. After that, the digital camera sends a sensed image to the printer, which prints the sensed image.
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Citations
16 Claims
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1. A wireless communication device comprising:
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one or more processors; and one or more memories including instructions that, when executed by the one or more processors, cause the device to; determine whether an operator has made a first operation for establishing a communication channel; search, using one of a plurality of frequency channels in turn, another wireless communication device at which a second operation for establishing a communication channel has been made; establish, in a case where the another wireless communication device at which the second operation has been made is detected within a predetermined time period from when the first operation has been made, a communication channel with the another wireless communication device even if the predetermined time period does not elapse from when the first operation has been made, so that a wireless network between the wireless communication device and the another wireless communication device is formed; wherein the predetermined time period is a time period that the wireless communication device continues a process for establishing a communication channel in a case where the another wireless communication device at which the second operation for establishing a communication channel has been made is not detected; receive, from the another wireless communication device on the formed wireless network, a communication parameter including information of an encryption key which is used for a cryptographic communication in an infrastructure mode of a wireless local area network common to the formed wireless network; and perform processing for the cryptographic communication in the infrastructure mode with the another wireless communication device using the received communication parameter including information of the encryption key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16)
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11. A method for controlling a wireless communication device, comprising:
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determining whether an operator has made a first operation for establishing a communication channel; searching, using one of a plurality of frequency channels in turn, another wireless communication device at which a second operation for establishing a communication channel has been made; establishing, in a case where the another wireless communication device at which the second operation has been made is detected within a predetermined time period from when the first operation has been made, a communication channel with the another wireless communication device even if the predetermined time period does not elapse from when the first operation has been made, so that a wireless network between the wireless communication device and the another wireless communication device is formed; wherein the predetermined time period is a time period that the wireless communication device continues a process for establishing a communication channel in a case where the another wireless communication device at which the second operation for establishing a communication channel has been made is not detected; receiving, from the another wireless communication device on the formed wireless network, a communication parameter including information of an encryption key which is used for a cryptographic communication in an infrastructure mode of a wireless local area network common to the formed wireless network; and performing processing for the cryptographic communication in the infrastructure mode with the another wireless communication device using the received communication parameter including information of the encryption key.
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12. A non transitory computer readable storage medium storing a program to be loaded to and executed by a computer,
the computer executing the program to execute: -
determining whether an operator has made a first operation for establishing a communication channel; searching, using one of a plurality of frequency channels in turn, another wireless communication device at which a second operation for establishing a communication channel has been made; establishing, in a case where the another wireless communication device at which the second operation has been made is detected within a predetermined time period from when the first operation has been made, a communication channel with the another wireless communication device if the predetermined time period does not elapse from when the first operation has been made, so that a wireless network between the wireless communication device and the another wireless communication device is formed; wherein the predetermined time period is a time period that the wireless communication device continues a process for establishing a communication channel in a case where the another wireless communication device at which the second operation for establishing a communication channel has been made is not detected; receiving, from the another wireless communication device on the formed wireless network, a communication parameter including information of an encryption key which is used for a cryptographic communication in an infrastructure mode of a wireless local area network common to the formed wireless network; and performing processing for the cryptographic communication in the infrastructure mode with the another wireless communication device using the received communication parameter including information of the encryption key.
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Specification