Power Saving Techniques in MBMS Multicast Mode

TitlePower Saving Techniques in MBMS Multicast Mode
Publication TypeConference Paper
Year of Publication2007
AuthorsBouras, C, Alexiou, A, Kokkinos, V
Conference Name3rd ACM International Workshop on Wireless Multimedia Networking and Performance Modeling - ACM WMUNEP 2007, Chania, Crete, Greece,
Date Published26 October
KeywordsMBMS, Power Control, UMTS

Multimedia Broadcast Multicast Services (MBMS) was
introduced in Third Generation Partnership Project (3GPP)
Release 6 in order to more efficiently use network and radio
resources for the transmission of multimedia services both in the
core network and, most importantly, in the air interface of
UTRAN (UMTS Terrestrial Radio Access Network). From the
radio perspective, MBMS includes point-to-point (PtP) and pointto-
multipoint (PtM) modes. The latter aims to overcome network
congestion when a large number of users request the same
content. One of the most important aspects in MBMS is power
control. The fact that Node B?s transmission power is a limited
resource and must be shared among all MBMS users in a cell
indicates the need for power control during an MBMS service.
Techniques, such us rate splitting and mixed usage of transport
channels can be used to reduce the power requirement of
delivering multicast traffic for MBMS users. To this direction,
this paper presents simulation results that will reinforce the need
for the usage of such techniques and will reveal the amount of
power that is saved.