Cellular communication system and re-use pattern therefor

A cellular communication system having a frequency bandwidth arranged into a plurality of frequency channels that are distributed on a consecutive frequency channel basis amongst a plurality of frequency groups the cellular communication system comprising a cluster having neighbouring first and second six-sectored sites, each sector of each site containing a frequency group having at least one frequency channel and wherein:

• the first six-sectored site comprises a first frequency channel and at least five other frequency channels each having an integer multiple next but one frequency channel relationship to the first frequency channel, wherein neighbouring sectors in the first six-sectored site each contain a frequency group having respective frequency channels that observe a next but one frequency channel relationship with frequency channels in at least one neighbouring frequency group;
• the second six-sectored site comprises a second frequency channel, consecutive in frequency to the first frequency channel, and at least five other frequency channels each having an integer multiple next but one frequency channel relationship to the second frequency channel, wherein neighbouring sectors in the second six-sectored site each contain a frequency group having respective frequency channels that observe a next but one frequency channel relationship with at least one neighbouring frequency group;
• and
• consecutive frequency channels of the frequency bandwidth are assigned to corresponding sectors in each of the neighbouring first and second six-sectored sites to produce a two-site re-use pattern for the cluster in which consecutive frequency channels are alternated between the first and second six-sectored sites.