WCDMA Introduction Multiple Access DirectSequence Code Division Multiple

WCDMA : Introduction • Multiple Access : Direct-Sequence Code Division Multiple Access (3. 84 Mcps) • Frame Duration : 10 ms • Multi-rate Concept : Variable spreading factor and multi-code • Service Multiplexing : Multiple services with different quality of service requirements multiplexed on one connection • Channels : Transport Channels (Higher Layer) Physical Channels (Physical Layer

WCDMA Packet Channels

WCDMA Packet Scheduling • • • Code Division Scheduling Time Division Scheduling Shared Channel Scheduling Bit Rate Shared Channels User 3 User 2 User 1 Dedicated Channels Time

Multiplexing Transport Ch. 1 TFI Transport Ch. 2 Transport Block Error Indication Transport Block TFI Transport Block TFCI Coding & Multiplexing Physical Control Ch. Physical Data Ch. TRANSMITTER TFI Transport Block Error Indication TFCI Decoding TFI Transport Block Error Indication Decoding & Demultiplexing Physical Control Ch. Physical Data Ch. RECEIVER

Uplink Multiplexing CRC Attachment DPDCH 1 DPDCH 2 DPDCH 3 Block Concatenation/ Segmentation Physical Channel Matching Channel Coding Radio Frame equalization First Interleaving Second Interleaving Other transport channels Physical Channel Segmentation Radio Frame Segmentation Transport Channel Rate Matching Multiplexing