Methods and apparatuses for multicasting within a wireless communications system are disclosed. In one embodiment a method of multicasting within a wireless communications system operating in accordance with a given wireless communication protocol includes monitoring multicast messages associated with a given multicast session in a first sector. A handoff occurs from the first sector to a second sector. It is determined whether the second sector is transmitting multicast messages associated with the given multicast session. Then, based on the determination, a registration request for the given multicast session within the second sector is transmitted on a reverse link access channel in an earlier slot than a next designated slot for registration requests as defined by the wireless communication protocol.