Abstract: A method and system of communicating between a base station and a mobile station is disclosed. The base station may be the core of a cell site, which is defined by radio frequency radiation patterns. The cell site may be divided into a number of sectors, each defined respectively by radiation patterns. The mobile station, while within any of the sectors of the cell site, may communicate with the base station on a reverse link by encoding signals using a spreading sequence offset by a common time delay. On the forward link, each sector is assigned a respective time delay that is within the common time delay. While within a respective sector of the cell site, the mobile station may receive signals from the base station on the forward link that have been encoded with the spreading sequence offset by the sector's respective time delay.

Abstract: A method for allocating identifiers in a cellular wireless network. The method may determine the optimal distribution of identifiers, such as pseudo-random offset numbers, to the sectors and cells of a Code Division Multiple Access cellular wireless system. The method may ensure that those identifiers that are used more than once by the system are allocated to sectors that are as far apart as possible. The method allocates identifiers preferentially to sectors in more tightly packed regions of the network. Then the method determines how widely spread the identifiers are. Sectors with identifiers that are near each other are then preferentially reallocated their identifiers. The method repeats determining the spread of identifiers and reallocating the identifiers until the sectors retain the same identifiers, thereby reflecting a stable allocation of identifiers in the cellular wireless system.