A method and apparatus for communicating the location of a split sector in a cellular wireless communication system. A processor receives a definition of the separate coverage areas defining the split sector and programmatically determines whether a minimum composite angle spanning the coverage areas exceeds a threshold such as 180°. If so, the processor establishes an data-representation of the split sector as an omnidirectional sector. Otherwise, the processor establishes a data-representation of the split sector as a non-omnidirectional sector. The processor may then communicate the established data-representation for use as a basis to facilitate a location-based service keyed to the location of the split sector, such as response to an emergency service call for instance.