| 摘要 |
An improved wireless communications system for efficiently delivering multicast transmissions within a CDMA wireless communications network. To minimize use of network resources, a multicast group Walsh code is dynamically assigned for transmissions to group members for the duration of the session. Reverse link multicast long code covers are assigned by a base station controller and transmitted to the mobile station on a forward channel as derived from the multicast IP address. A multicast reflection function is provided at the base station controller or the IP gateway to transmit multicast messages received from mobile stations to other group members in their coverage area. The assigned group Walsh codes and long codes are used to spread all multicast transmissions on the CDMA forward and reverse channels, respectively.
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