Components and methods for processing in wireless communication data in presence of format uncertainty

A method of wireless communication where communication data for selected Coded Composite Transport Channels (CCTrCHs) is transmitted in system time frames in a transport format combination (TFC) for each CCTrCH selected from a Transport Format Combination Set (TFCS) of predefined TFCs wherein communication data for each frame is prepared for transmission in a TFC selected for that time frame by segmentation into a format-defined number of physical channels, followed by interleaving of the data for each physical channel, followed by spreading the interleaved data for each physical channel using a respective format-defined spreading code and a respective format-defined spreading factor such that the respective spread data for all physical channels specified by the selected TFC for the time frame is transmitted as a wireless signal in the time frame, where there exists a minimum spreading code defined for a physical channel of one TFC of the TFCS which is a subset of the spreading codes defined for all of the physical channels of all other TFCs of the TFCS, the method comprising:

• receiving sequential frames of wireless signals of spread data;
• despreading each wireless signal of spread data received in each time frame using the minimum spreading code and storing resultant despread data for each respective time frame in a memory wherein multiple types of CCTrCHs, each having a predefined TFCS of TFCs are despread using a respective selected TFC having a highest data rate, for the type of CCTrCH of respective received frames;
• determining the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame based upon processing the received signal for each respective time frame wherein the actual TFC used in formatting the data for the respective frame is detected to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame;
• and
• de-interleaving the stored data despread by the RCRP for each respective time frame into the determined number of physical channels based upon the number of physical channels and respective spreading factor for each physical channel determined for the respective time frame.

An application specific integrated circuit (ASIC) for a wireless transmit receive unit (WTRU) that is used in a wireless communication system where communication data for selected Coded Composite Transport Channels (CCTrCHs) is transmitted in system time frames in a transport format combination (TFC) for each CCTrCH selected from a Transport Format Combination Set (TFCS) of predefined TFCs wherein communication data for each frame is prepared for transmission in a TFC selected for that time frame by segmentation into a format-defined number of physical channels, followed by interleaving of the data for each physical channel, followed by spreading the interleaved data for each physical channel using a respective format-defined spreading code and a respective format-defined spreading factor such that the respective spread data for all physical channels specified by the selected TFC for the time frame is transmitted as a wireless signal in the time frame, where there exists a minimum spreading code defined for a physical channel of one TFC of the TFCS which is a subset of the spreading codes defined for all of the physical channels of all other TFCs of the TFCS, where the WTRU has a receiver configured to receive sequential frames of wireless signals of spread data, the ASIC comprising:

• a memory;
• a received chip rate processor (RCRP) configured to despread each wireless signal of spread data received in each time frame using the minimum spreading code and storing resultant despread data for each respective time frame in the memory wherein the RCRP is configured to despread multiple types of CCTrCHs, each having a predefined TFCS of TFCs using a respective selected TFC having a highest data rate, for the type of CCTrCH of respective received frames;
• a format detector configured to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame based upon processing the received signal for each respective time frame wherein the format detector is configured to determine the actual TFC used in formatting the data for the respective frame;
• and
• a de-interleaver configured to de-interleave the stored data despread by the RCRP for each respective time frame into the determined number of physical channels based upon the number of physical channels and respective spreading factor for each physical channel determined by the format detector for the respective time frame.

A wireless transmit receive unit (WTRU) configured for use in a wireless communication system where communication data for selected Coded Composite Transport Channels (CCTrCHs) is transmitted in system time frames in a transport format combination (TFC) for each CCTrCH selected from a Transport Format Combination Set (TFCS) of predefined TFCs wherein communication data for each frame is prepared for transmission in a TFC selected for that time frame by segmentation into a format-defined number of physical channels, followed by interleaving of the data for each physical channel, followed by spreading the interleaved data for each physical channel using a respective format-defined spreading code and a respective format-defined spreading factor such that the respective spread data for all physical channels specified by the selected TFC for the time frame is transmitted as a wireless signal in the time frame, where there exists a key sequence which is usable to despread the spreading codes defined for all of the physical channels of all TFCs of the TFCS, the WTRU comprising:

• a receiver configured to receive sequential frames of wireless signals of spread data;
• a memory;
• a received chip rate processor (RCRP) configured to despread each wireless signal of spread data received in each time frame using the key sequence and storing resultant despread data for each respective time frame in the memory;
• a format detector configured to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame based upon processing the received signal for each respective time frame wherein the format detector is configured to determine the actual TFC used in formatting the data for the respective frame;
• and
• a de-interleaver configured to de-interleave the stored data despread by the RCRP for each respective time frame into the determined number of physical channels based upon the number of physical channels and respective spreading factor for each physical channel determined by the format detector for the respective time frame.