Methods and apparatus to identify the accessibility of femto-base stations in communication systems

摘要

A system and method for identifying the accessibility of femto base stations in a communication system. The system and method includes a plurality of macro base stations, open-access femto base stations and femto base stations with different subscriber groups. At least one of the base stations includes a transmitter configured to apply a base station identifier, such as a closed subscription group identifier, as a cyclic redundancy check (CRC) mask to XOR (exclusive OR) the CRC of a broadcast channel communication or an input to generate a scrambling sequence to the broadcast channel communication.

主权项

1. For use in a wireless communications network, a mobile station capable of communicating with a plurality of different type base stations, the mobile station comprising:
a receiver configured to receive a broadcast channel communication from a base station, the broadcast channel communication comprising a cyclic redundancy check (CRC) masked with a femtocell base station identifier; and a processor configured to:
extract the femtocell base station identifier by unmasking the broadcast channel communication; anddistinguish a type of the base station by comparing the femtocell base station identifier with identifiers of the plurality of different type base stations comprising a macro type base station and a femtocell type base station, until the femtocell base station identifier matches one of the identifiers of the plurality of different type base stations.