UMTS LTE Physical Downlink Channels

Physical downlink channels are transmission channels that transport control messages and user data from radio base stations to mobile devices (UEs). Physical downlink channels include broadcast, multicast, and shared transmission channels.

This figure  shows the physical channels that can be used in the UMTS LTE system. This diagram shows that the downlink physical channels include downlink and uplink channels. The downlink channels include shared channels for user data and control messages (PDSCH), a one to many (multicast) channel that can send media to specific groups of receivers (PMCH), a control channel (PDCCH), a broadcast channel to transfer messages and media to all mobiles in a coverage area (PBCH), a channel that identifies the cell site’s radio configuration information (PCFICH), and a transmission flow signaling channel (PHICH). The uplink physical channels include a system access request channel (PRACH), a shared user data and control message transmission channel (PUSCH), and a control channel (PUCCH).

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UMTS LTE This book explains the basic components, technologies used, and operation of UMTS LTE systems. Discover the key features that LTE systems provide that go beyond the capabilities of existing 2G and 3G mobile systems such as ultra high-speed Internet (100 Mbps+), television (multicast video), and low latency services (packet voice). $19.99 Printed, $16.99 eBook

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