Relaying in a communication system

An apparatus for a relay node in communication system where communications between a mobile device and a network access node is relayed by at least two relay nodes of a group of relay nodes, the apparatus comprising:

• at least one processor, and
• at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to provide mobility management for controlling an intra-group handover of the mobile device from a first relay node of the at least two relay nodes to a second relay node of the at least two relay nodes, such that the mobile device remains connected to the network access node via one of the first relay node and the second relay node during the handover, wherein control information is communicated between said first and second relay nodes on an interface between relevant relay nodes in the group of relay nodes for the intra-group handover to maintain the relayed communication for the mobile device after the intra-group handover between the relay nodes.