Subject: What on earth is the difference in broadcast and Multicast?

From: Jian Bo Huang <[email-masked]>
Date: Wed, 14 Aug 2002 00:52:16 +0100

Hello, All,
 
I am doing something in Multicast service in UMTS. Found something
confusing.
 
If a service broadcast (?) / multicast (?) data  to a Routeing Area, it
does not stop even if there is no any member in the RA, but it do have
explicit join / query / response / leave procedures.
 
What Can I call it? Broadcast or Multicast?
 
From the definition of Multicast, we can say it is a multicast for the
data to send to a group of users. But it is more like broadcast because
there isn't distribution tree truncate when no member in a RA.
 
Thank you!
 
Truly yours,
 
Jian Bo Huang
MSc Student
 
Department of Electronic Engineering,
University of Surrey
Guildford, Surrey
GU2 7XH, UK
Email: [email-masked]