Unbalanced availability and the grade of service of overlapping radio ports

This paper discusses the problem of limited availability, where users of a wireless system do not enjoy equal access opportunity to the systems´ radio ports. The paper discusses two common scenarios where that can occur. One where there is an overlap in the coverage of two neighboring stations and the other where the coverage of one radio port is completely contained within that of the other. The paper analyzes two possible policies of radio port selection for the users who can access more than one port. One access policy is a that of a completely random choice, while by the other the user selects only one of the free ports. The analysis demonstrates that system capacity may drop substantially if a proper balance is not maintained