Communication system, information processing apparatus, and control method

A control method, comprising:

• a reception step of receiving a message indicating formation of a second network from a first subset of communication apparatuses leaving a first network;
• a management step of managing information for the second network and information for a third network, wherein the third network is a network to be connected by the first subset of communication apparatuses in response to the second network disappearing;
• and
• a transmission step of transmitting, when the message is received in said reception step, at least the information for the second network or the information for the third network to the first subset of communication apparatuses,
• wherein said reception step, said management step and said transmission step are performed by computer processors.

A non-transitory computer-readable storage medium storing an executable program for causing a computer to execute a method that comprises:

• a reception step of receiving a message indicating formation of a second network from a first subset of communication apparatuses leaving a first network;
• a management step of managing information for the second network and information for a third network, wherein the third network is a network to be connected by the first subset of communication apparatuses in response to the second network disappearing;
• and
• a transmission step of transmitting, when the message is received in said reception step, at least the information for the second network or the information for the third network to the first subset of communication apparatuses.

An information processing apparatus comprising:

• a message reception unit configured to receive, when a first subset of communication apparatuses of a plurality of communication apparatuses for forming a first network topology disassociates from a first network and forms a second network topology, a message for requesting to form the second network topology from the first subset communication apparatuses;
• a management unit configured to manage identification information of a second network for forming the second network topology and identification information of a third network for associating with a third network topology which is different from the second network topology in response to the second network disappearing;
• and
• a message transmission unit configured to transmit, when said message reception unit receives the message from the first subset of communication apparatuses, the identification information of the second network or the identification information of the third network to the first subset of communication apparatuses.