A method of triggering a decision of a wireless communication system on a handover andor of triggering a handover by means of at least one trigger signal. Certain disclosed antenna elements provide a reduction in the footprint of the antenna elements while maintaining the performance characteristics by providing a greater surface area on either a top, middle or bottom portion of a CLMD antenna. The first resonating cavity has a first free spectral range. If the word frequency list exists but it is older than an aging limit, an asynchronous process is started on the server computer to regenerate the word frequency list. Both of the first antenna and the second antenna include a radiating element, a connecting element respectively connecting the radiating element and a grounding portion.