Method for allocating common packet channels

A method for allocating common packet channels (CPCH), comprising:

• transmitting status information of a plurality of CPCHs from a system to at least one mobile station;
• selecting one of the plurality of CPCHs based on the status information, and transmitting an access preamble (AP) with a signature from the at least one mobile station to the system to request allocation of the selected CPCH, the signature mapping with at least one scrambling code;
• transmitting a channel allocation indicator channel (CA-ICH) of at least one CPCH to be allocated from the system to the mobile station, the CA-ICH having a signature mapped with at least one scrambling code;
• and
• transmitting a message from the mobile station to the system through at least one available physical channel using the at least one scrambling code of the CA-ICH.

A method for allocating common packet channels (CPCHs), comprising:

• transmitting status information of the CPCHs from a system to a mobile station;
• selecting a specific CPCH to be used based on the status information and generating an access presample (AP), comprising a signature indicative of the selected CPCH. minimum spreading factor of the specific CPCH, and a maximum data rate, the signature mapping with scrambling codes having a channelization OVSF code tree in a message part of the specific CPCH, and a channelization code of a data part and a control part in the message part being selected in the code tree;
• and
• transmitting the AP containing the signature from the system to the mobile station to request allocation of the specific CPCH.

A method for allocating common packet channels (CPCHs), comprising:

• transmitting status information of a plurality of CPCHs from a system to a mobile station;
• selecting a desired CPCH in accordance with the status information;
• transmitting an access preamble (AP), comprising a signature indicative of the selected CPCH, a minimum spreading factor of the CPCH, and a maximum data rate, to the system;
• transmitting a channel allocation indicator channel (CA-ICH) of at least one of the plurality of CPCHs to be allocated, from the system to the mobile station in accordance with the minimum spreading factor and the maximum data rate received from the mobile station, the CA-ICH comprising a signature mapped with at least one scrambling code having a channelization orthogonal variable spreading factor (OVSF) code tree in a message part of the CPCH;
• and
• transmitting a message from the mobile station to the system using at least one corresponding physical channel in accordance with the CA-ICH, channelization codes of a data part and a control part in the message part being selected in the code tree.

A method for allocating Common Packet Channels (CPCHs), comprising:

• receiving group information of a plurality of CPCHs from a system;
• transmitting an access preamble (AP) which indicates a group to be used and a desired transmission rate in accordance with the received group information;
• selecting at least one of the plurality of CPCHs to be allocated in a group designated by the AP from the mobile station and transmitting a channel allocation indicator channel (CA-ICH) of the selected CPCH, the CA-ICH comprising a signature mapped with scrambling codes;
• and
• transmitting a message to the system through at least one corresponding physical channel in accordance with the CA-ICH.

A method for allocating common packet channels, comprising:

• transmitting a maximum data rate and a minimum spreading factor of a desired channel from a mobile station to a system to request allocation of the channel;
• transmitting a signal available for allocation of the requested channel from the system to the mobile station in response to the request;
• mapping a collision detection preamble (CP-P) to prevent channel collision by a specific scrambling code set and transmitting the CD-P from the mobile station to the system;
• selecting a scrambling code from the scrambling code set designated by the CD-P transmitted from the mobile station and mapping the selected scrambling code by a channel allocation indicator channel (CA-ICH) to transmit the scrambling code to the mobile station;
• and
• transmitting a message from the mobile station to the system using the scrambling code designated by the transmitted CA-ICH.

A method for allocating common packet channels (CPCHs) comprising:

• transmitting one of a maximum data rate and a minimum spreading factor of a desired channel from a mobile station to a system to request allocation of the channel;
• determining at the system whether allocation of the requested channel is available and responding to the mobile station;
• mapping a collision detection preamble (CD-P) for preventing a channel collision with a specific scrambling code and transmitting the CD-P from the mobile station to the system;
• selecting a scrambling code set that can use the scrambling code designated by the CD-P transmitted by the system to map with a channel allocation indicator channel (CA-ICH) and transmitting the scrambling code set to the mobile station;
• and
• transmitting a message from the mobile station to the system using a scrambling code selected from the scrambling code set designated by the transmitted CA-ICH.