A system, method, apparatuse, and computer program for maintaining a radio coverage area of a wireless communication network, implemented in a mobile robot (100) of a plurality of mobile robots (100) providing the radio coverage area, are described. Each mobile robot (100) comprising a radio base station of the wireless communication network. The method comprises upon receiving instruction from a maintenance base (110), moving to a geographical position to deploy as part of a daisy chain loop of mobile robots (100). The method further comprises upon receiving further instruction from the maintenance base (110), moving to a further geographical position as part of a circular shift operation performed by the mobile robots (100) deployed to the daisy chain loop to maintain the radio coverage area and to return a further mobile robot (100) of the mobile robots (100) deployed to the daisy chain loop to the maintenance base (110).
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