Program, relay apparatus control method, wireless communicating apparatus control method, and system

A program embodied in a computer readable storage device for allowing a wireless communicating apparatus of a wireless network for selecting and connecting an optimum one of a plurality of relay apparatuses to execute:

• a transmitting step wherein measurement information to confirm a reception level value is transmitted to the plurality of relay apparatuses existing in a communication possible range, wherein a list on which identification information of the communication possible relay apparatuses and channels have been registered by a searching operation at the time of turn-on of a power source is provided, and confirmation information to detect the reception level value is transmitted to the relay apparatuses registered on said list;
• and
• a switching control step wherein when a switching notification to switch from a first one of the relay apparatuses which has issued a connection permission notification to a second one of the relay apparatuses is received, communication connection is requested and request information to request the communication connection is transmitted as a next connection destination to said second relay apparatus and a permission response including response information showing connection permission is received, thereby switching to the communication connection to the second relay apparatus, wherein
• the first relay apparatus transmits the switching notification when the reception level value from the measurement information transmitted by said wireless communicating apparatus is exceeded by the reception level value notified to the first relay apparatus from the second relay apparatus.

A relay apparatus control method of a wireless network for selecting and connecting an optimum one of a plurality of fixedly arranged relay apparatuses in association with movement of a wireless communicating apparatus, comprising:

• a detecting step wherein measurement information transmitted from said wireless communicating apparatus is received by a first relay apparatus, a reception level value is detected, in the case of the first relay apparatus, where the measurement information from the wireless communicating apparatus which has been notified of connection permission, said reception level value is managed, in the case of a second relay apparatus, where the measurement information from the wireless communicating apparatus which is not notified of the connection permission, said reception level value is notified to the first relay apparatus which has been notified of the connection permission, and wherein confirmation information transmitted from said wireless communicating apparatus is received and the reception level value is detected, with respect to the first relay apparatus, said reception level value is registered into the management table, and with respect to the second relay apparatus, said reception level value is notified through a wired network to said first relay apparatus;
• a receiving step wherein the reception level value notified from said second relay apparatus is received by said first relay apparatus registered into the management table;
• and
• a switching instructing step wherein the reception level value of the wireless communicating apparatus which has been notified of the connection permission by the first relay apparatus is compared with the reception level value from said second relay apparatus, when the reception level value from said second relay apparatus exceeds the reception level value of the first relay apparatus, the connection permission to said wireless communicating apparatus is cancelled by the first relay apparatus by deleting identification information of the wireless communicating apparatus from said management table, and notification information to notify said wireless communicating apparatus of the switching to said second relay apparatus which is connected to next is transmitted.

A wireless communicating apparatus control method of a wireless network for selecting and connecting an optimum one of a plurality of relay apparatuses, comprising:

• a transmitting step wherein measurement information to confirm a reception level value is transmitted to the plurality of relay apparatuses existing in a communication possible range wherein a list on which identification information of the communication possible relay apparatuses and channels have been registered by a searching operation at the time of turn-on of a power source is provided, and confirmation information to detect the reception level value is transmitted to the relay apparatuses registered on said list;
• and
• a switching control step wherein when a switching notification to switch from a first one of the relay apparatuses which has issued a connection permission notification to a second one of the relay apparatuses is received, communication connection is requested and request information to request the communication connection is transmitted as a next connection destination to the second relay apparatus and a permission response including response information showing connection permission is received, thereby switching to the communication connection to the second relay apparatus, wherein
• the first relay apparatus transmits the switching notification when the reception level value from the measurement information transmitted by said wireless communicating apparatus is exceeded by the reception level value notified to the first relay apparatus from the second relay apparatus.

A system for selecting and connecting an optimum one of a plurality of relay apparatuses in association with movement of a wireless communicating apparatus, wherein

• a first relay apparatus comprises:
• a detecting unit which receives measurement information transmitted from said wireless communicating apparatus, detects a reception level value, in the case of the measurement information from the wireless communicating apparatus which has been notified of connection permission, manages said reception level value, in the case of the measurement information from the wireless communicating apparatus which is not notified of the connection permission, notifies said reception level value to a second relay apparatus which has been notified of the connection permission, and further receives and manages the reception level value notified from said second relay apparatus, and wherein said detecting unit of said first relay apparatus receives confirmation information periodically transmitted from said wireless communicating apparatus and detects the reception level value,
• in the case of the confirmation information from the wireless communicating apparatus which is not notified of the connection permission, notifies said reception level value via a wired network to said second relay apparatus which has been notified of the connection permission, and registers the reception level value notified from said first relay apparatus via said wired network into said management table;
• and
• a switching instructing unit which compares the reception level value of the wireless communicating apparatus which has been notified of the connection permission by the first relay apparatus with the reception level value of said second relay apparatus, when the reception level value of said second relay apparatus exceeds the first reception level value, cancels the connection permission by deleting identification information of said wireless communicating apparatus from said management table, and transmits notification information to notify said wireless communicating apparatus of the switching to the second relay apparatus which is connected to next, and
• said wireless communicating apparatus comprises:
• a transmitting unit which transmits measurement information to confirm the reception level value to the relay apparatuses existing in a communication possible range and wherein said transmitting unit has a list on which the identification information of the communication possible relay apparatuses and the channels have been registered by a searching operation at the time of turn-on of a power source and transmits confirmation information to detect the reception level value to the relay apparatuses registered on said list;
• and
• a switching control unit which, when a switching notification to switch from the first relay apparatus which has issued a connection permission notification to the second relay apparatus is received, requests communication connection to the second relay apparatus and receives a permission response, and transmits request information to request the communication connection to the second relay apparatus as a next connection destination when the switching notification to switch from the first relay apparatus which has issued the connection permission notification to the second relay apparatus which is connected to next and receives the response information showing the connection permission, thereby switching to the communication connection to the second relay apparatus.

A relay apparatus of a wireless network, comprising:

• a detecting unit which receives measurement information transmitted from a wireless communicating apparatus, detects a reception level value, in the case of the measurement information from the wireless communicating apparatus which has been notified of connection permission, manages said reception level value, in the case of the measurement information from the wireless communicating apparatus which is not notified of the connection permission, notifies said reception level value to a second relay apparatus which has been notified of the connection permission, and further receives and manages the reception level value notified from said second relay apparatus and wherein said detecting unit receives confirmation information transmitted from said wireless communicating apparatus, and detects the reception level value,
• in the case of the confirmation information from the wireless communicating apparatus which has been notified of the connection permission, registers said reception level value into a management table,
• in the case of the confirmation information from the wireless communicating apparatus which is not notified of the connection permission, notifies said reception level value through a wired network to said second relay apparatus which has been notified of the connection permission, and
• further registers the reception level value notified from said second relay apparatus through the wired network into said management table of the relay apparatus;
• and
• a switching instructing unit which compares the reception level value of said wireless communicating apparatus which has been notified of the connection permission by the first relay apparatus with the reception level value of said second relay apparatus, when the reception level value of said second relay apparatus exceeds the reception level value of the first relay apparatus, cancels the connection permission to said wireless communicating apparatus by deleting identification information of the wireless communicating apparatus from said management table, and transmits notification information to notify said wireless communicating apparatus of the switching to the second relay apparatus which is connected to next.

A wireless communicating apparatus of a wireless network for selecting and connecting an optimum one of a plurality of relay apparatuses, the wireless communicating apparatus of the invention comprises:

• a transmitting unit which transmits measurement information to confirm a reception level value to the plurality of relay apparatuses existing in a communication possible range, and;
• and
• a switching control unit which, when a switching notification to switch from a first one of the relay apparatuses which has issued a connection permission notification to a second one of the relay apparatuses is received, requests communication connection to the second relay apparatus and receives a permission response, thereby switching to the communication connection to the second relay apparatus;
• a searching unit which transmits request information to obtain use permission to all channels set in said plurality of relay apparatuses at the time of the turn-on of the power source, and when the response information showing that the communication is possible is received from said relay apparatuses registers the identification information and the channel of said relay apparatuses onto said list;
• and
• a requesting unit which selects a specific relay apparatus from said plurality of relay apparatuses which have transmitted said response information, transmits the request information to obtain the connection permission, receives the response information showing the connection permission from the specific relay apparatus as a transmission destination, and starts a communication connecting operation, wherein
• the first relay apparatus transmits the switching notification when the reception level value from the measurement information transmitted by said wireless communicating apparatus is exceeded by the reception level value notified to the first relay apparatus from the second relay apparatus.