UMTS standard: WCDMA/FDD Layer 1
17.1 TRANSPORT CHANNELS AND PHYSICAL CHANNELS (FDD)
17.1.1 Transport channels In the terminology used in wireless communications, ‘transport channels’ are the services offered by Layer 1 to the higher layers. The purpose of this section is to introduce basic terminology and abbreviations used in practice. For more details, see www.3gpp.org. We start with the deﬁnition of the channels. • Dedicated transport channel DCH – Dedicated Channel DCH is a downlink or uplink transport channel that is used to carry user or control information between the network and mobile station. DTCH – Dedicated Trafﬁc Channel. SDCCH – Stand-Alone...