| 摘要 |
The invention relates to a base transceiver station in a CDMA mobile telephone system, including a mechanism for maintaining a code tree which determines spreading codes to be used in the system, a mechanisms for selecting a spreading code from the code tree for the communication between the base transceiver station and terminal equipment communicating with the base transceiver station. The mechanisms for selecting a spreading code are configured to select a highest level in the code tree which includes at least one branch of the code tree whose spreading codes are allocatable, and allocate for use a spreading code generated from a branch of the selected level whose spreading codes are allocatable. The invention further relates to a method and a communication system in connection with Code Division Multiple Access (CDMA) technology.
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