Improved call set-up in a radio communication system with dynamic channel allocation

摘要

A call set-up technique which uses channel selection at both base (11) and subscriber terminal (13) in determining the radio traffic channel upon which to set-up a new call. Communication between the base station and subscriber terminal is carried out on a signalling channel until the traffic channel is chosen. Calls are set-up so that they proceed on the radio channel which, of a set of channels under consideration by the subscriber terminal, contains the least amount of interference as measured at the subscriber terminal. The channels under consideration by the subscriber terminal are those channels having little interference, as measured by the base station. The call set-up technique thereby assures that calls proceed on channels containing little interference from the viewpoints of both base station and subscriber terminal. (Fig. 1).