RADIO COMMUNICATION SYSTEM COMPRISING COMMUNICATION UNITS THAT COMMUNICATE EITHER DIRECTLY OR VIA AN INTERMEDIATE NODE

摘要

A communication system (100) includes a plurality of communication units (104-108) that communicate either directly or via an intermediary communication unit (102). A first communication unit (108) receives directly (114) a call set-up request from a second communication unit (104), wherein the call set-up request includes an indication that the call is to be set-up via the intermediary communication unit (102). The first (308) for determining that a signal quality from the second communication unit is or will be better than a signal quality from the intermediary communication unit (102). In response to such a dtermination the first communication unit (108) joins the call with the second communication unit (104) directly. A communication unit and method of setting up a call are also provided.