Page 203 - From GMS to LTE

Universal Mobile Telecommunications System (UMTS) and High-Speed Packet Access (HSPA) 189

RNC E-DCH DCH**
Transport channels

Node-B E-DPDCH* E-DPCCH DPDCH** DPCCH**

Physical channels
UE-PHY
DPCCH
(for HSDPA)
Transport channels
UE
E-DCH DCH**

*Potentially sent **Optional, e.g. for a
with several different simultaneous voice
spreading codes call
(multi-code)
Figure 3.42 Transport and Physical Channels used for HSUPA.

RNC HS-DSCH DCH**

E-AGCH HS-SCCH
Node-B E-HICH* E-RGCH* HS-PDSCH DPDCH DPCCH

UE-PHY ...

UE
HS-DSCH DCH**

*Sent from different **Optional, e.g. for a
cells while in soft- simultaneous voice
handover state call
Figure 3.43 Simultaneous downlink channels for simultaneous HSUPA, HSDPA and DCH use.

the same time to increase the overall speed. This concept is called multicode channel
and is similar to the HSDPA concept of assigning frames on several downlink shared
channels to a single mobile device. As described in more detail below, the maximum
number of simultaneous code channels has been limited to four per mobile device, with